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uom_code,unit_of_meas_name,unit_of_meas_type,target_uom_code,factor_b,factor_c,remarks,information_source,data_source,revision_date,change_id,deprecated
1024,bin,scale,9201,1,1,,OGP,OGP,2012/07/14,2011.106,0
1025,millimetre,length,9001,1,1000,,ISO 1000.,IOGP,2015/11/25,2013.021 2015.062,0
1026,metres per second,length,1026,1,1,Length rate.,OGP,IOGP,2015/11/25,2013.021 2015.062,0
1027,millimetres per year,length,1026,1,31556925445,"Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029.",ISO 1000.,OGP,2013/09/02,2013.021 2013.042,0
1028,parts per billion,scale,9201,1,1000000000,"Billion is internationally ambiguous, in different languages being 1E+9 and 1E+12. One billion taken here to be 1E+9.",OGP,OGP,2013/05/29,2013.021,0
1029,year,time,1040,31556925.445,1,,"International Union of Geological Sciences (IUGS) and International Union of Pure and Applied Chemistry (IUPAC). Pure Appl. Chem., Vol. 83, No. 5, pp. 1159–1162, 2011.",OGP,2013/05/28,2013.021,0
1030,parts per billion per year,scale,1036,1,3.1556925445e+16,"Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. Billion is internationally ambiguous, in different languages being 1E+9 and 1E+12. One billion taken here to be 1E+9.",ISO 1000.,IOGP,2015/06/24,2013.021 2013.042 2013.067 2015.036,0
1031,milliarc-second,angle,9101,3.14159265358979,648000000,= ((pi/180) / 3600 / 1000) radians,,IOGP,2015/11/25,2013.021 2015.062,0
1032,milliarc-seconds per year,angle,1035,3.14159265358979,2.044888768836e+16,"= ((pi/180) / 3600 / 1000) radians per year. Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029.",,OGP,2013/09/02,2013.021 2013.042,0
1033,centimetre,length,9001,1,100,,ISO 1000.,IOGP,2015/11/25,2013.021 2015.062,0
1034,centimetres per year,length,1026,1,3155692544.5,"Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029.",ISO 1000.,OGP,2013/09/02,2013.021 2013.042,0
1035,radians per second,angle,1035,1,1,Angle rate.,OGP,IOGP,2015/11/25,2013.021 2015.062,0
1036,unity per second,scale,1036,1,1,Scale rate.,OGP,OGP,2013/05/29,2013.021,0
1040,second,time,1040,1,1,Not to be confused with the angle unit arc-second.,ISO 1000.,IOGP,2015/11/25,2013.021 2015.062,0
1041,parts per million per year,scale,1036,1,31556925445000,"Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029.",,OGP,2013/09/02,2013.021 2013.037 2013.042,0
1042,metres per year,length,1026,1,31556925.445,"Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029.",OGP,OGP,2013/09/02,2013.021 2013.042,0
1043,arc-seconds per year,angle,1035,3.14159265358979,20448887688360,"=((pi/180) / 3600) radians per year. Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029.",,IOGP,2015/03/06,2013.021 2013.042 2015.014,0
9001,metre,length,9001,1,1,Also known as International metre. SI standard unit.,ISO 1000.,IOGP,2015/11/25,2015.062,0
9002,foot,length,9001,0.3048,1,,"ISO 1000; 1958",IOGP,2015/11/25,2015.062,0
9003,US survey foot,length,9001,12,39.37,Used in USA.,OGP,IOGP,2015/11/25,1999.990 2015.062,0
9005,Clarke's foot,length,9001,0.3047972654,1,"Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping.",Australian Land Information Group www.auslig.gov.au,IOGP,2015/11/25,1997.233 1999.990 2000.050 2005.370 2005.460 2015.062,0
9014,fathom,length,9001,1.8288,1,= 6 feet.,,IOGP,2015/11/25,2015.062,0
9030,nautical mile,length,9001,1852,1,,,IOGP,2015/11/25,1996.240 2015.062,0
9031,German legal metre,length,9001,1.0000135965,1,Used in Namibia.,"Chief Directorate Surveys and Land Information; Mowbray; South Africa",IOGP,2015/11/25,2015.062,0
9033,US survey chain,length,9001,792,39.37,Used in USA primarily for public lands cadastral work.,Bureau of Land Management technical bulletin 6 (1973) and Standard Field Tables 8th edition (1956).,IOGP,2015/11/25,1999.990 2015.062,0
9034,US survey link,length,9001,7.92,39.37,Used in USA primarily for public lands cadastral work.,Bureau of Land Management technical bulletin 6 (1973) and Standard Field Tables 8th edition (1956).,IOGP,2015/11/25,1999.990 2015.062,0
9035,US survey mile,length,9001,63360,39.37,Used in USA primarily for public lands cadastral work.,Bureau of Land Management technical bulletin 6 (1973) and Standard Field Tables 8th edition (1956).,IOGP,2015/11/25,1999.990 2015.062,0
9036,kilometre,length,9001,1000,1,,ISO 1000.,IOGP,2015/11/25,2015.062,0
9037,Clarke's yard,length,9001,0.9143917962,1,"=3 Clarke's feet. Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping.",Australian Land Information Group www.auslig.gov.au,IOGP,2015/11/25,1997.233 1999.990 2005.370 2005.460 2015.062,0
9038,Clarke's chain,length,9001,20.1166195164,1,"=22 Clarke's yards. Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping.",Australian Land Information Group www.auslig.gov.au,IOGP,2015/11/25,1997.233 1999.990 2005.370 2005.460 2015.062,0
9039,Clarke's link,length,9001,0.201166195164,1,"=1/100 Clarke's chain. Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping.",Australian Land Information Group www.auslig.gov.au,IOGP,2015/11/25,1997.233 1999.990 2005.370 2005.460 2015.062,0
9040,British yard (Sears 1922),length,9001,36,39.370147,Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping.,"G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9041,British foot (Sears 1922),length,9001,12,39.370147,Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping.,"G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9042,British chain (Sears 1922),length,9001,792,39.370147,Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping.,"G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9043,British link (Sears 1922),length,9001,7.92,39.370147,Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping.,"G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9050,British yard (Benoit 1895 A),length,9001,0.9143992,1,Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine.,"J.S.Clark; ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2006.260 2015.062,0
9051,British foot (Benoit 1895 A),length,9001,0.9143992,3,Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine.,"J.S.Clark; ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2006.260 2015.062,0
9052,British chain (Benoit 1895 A),length,9001,20.1167824,1,Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine.,"J.S.Clark; ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2006.260 2015.062,0
9053,British link (Benoit 1895 A),length,9001,0.201167824,1,Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine.,"J.S.Clark; ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2006.260 2015.062,0
9060,British yard (Benoit 1895 B),length,9001,36,39.370113,"G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.","G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9061,British foot (Benoit 1895 B),length,9001,12,39.370113,Uses Benoit's 1895 British yard-metre ratio as given by Bomford as 39.370113 inches per metre. Used in West Malaysian mapping.,"G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9062,British chain (Benoit 1895 B),length,9001,792,39.370113,Uses Benoit's 1895 British yard-metre ratio as given by Bomford as 39.370113 inches per metre. Used in West Malaysian mapping.,"G. Bomford ""Geodesy"" 2nd edition 1962; after J.S.Clark ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9063,British link (Benoit 1895 B),length,9001,7.92,39.370113,Uses Benoit's 1895 British yard-metre ratio as given by Bomford as 39.370113 inches per metre. Used in West Malaysian mapping.,"G. Bomford; ""Geodesy""; 3rd edition 1975",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9070,British foot (1865),length,9001,0.9144025,3,Uses Clark's estimate of 1853-1865 British foot-metre ratio of 0.9144025 metres per yard. Used in 1962 and 1975 estimates of Indian foot.,"J.S.Clark; ""Remeasurement of the Old Length Standards""; Empire Survey Review no. 90; 1953.",IOGP,2015/11/25,1997.233 1999.990 2015.062,0
9080,Indian foot,length,9001,12,39.370142,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (= 3 British feet) taken to be J.S.Clark's 1865 value of 0.9144025 metres.,"G. Bomford; ""The Re-adjustment of the Indian Triangulation""; Survey of India Professional Paper 28; 1939.",IOGP,2015/11/25,1997.231 1999.990 2015.062,0
9081,Indian foot (1937),length,9001,0.30479841,1,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British foot taken to be 1895 Benoit value of 12/39.370113m. Rounded to 8 decimal places as 0.30479841. Used from Bangladesh to Vietnam. Previously used in India and Pakistan but superseded.,"G. Bomford; ""The Re-adjustment of the Indian Triangulation""; Survey of India Professional Paper 28; 1939.",IOGP,2015/11/25,1997.231 1999.990 2015.062,0
9082,Indian foot (1962),length,9001,0.3047996,1,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures with a small error as 1 Ind ft=0.3047996m. Used in Pakistan since metrication.,"G. Bomford; ""Geodesy""; 2nd edition 1962",IOGP,2015/11/25,1997.231 1999.990 2007.011 2015.062,0
9083,Indian foot (1975),length,9001,0.3047995,1,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures as 1 Ind ft=0.3047995m. Used in India since metrication.,"G. Bomford; ""Geodesy""; 3rd edition 1975",IOGP,2015/11/25,1997.231 1999.990 2007.011 2015.062,0
9084,Indian yard,length,9001,36,39.370142,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (= 3 British feet) taken to be J.S.Clark's 1865 value of 0.9144025 metres.,"G. Bomford; ""The Re-adjustment of the Indian Triangulation""; Survey of India Professional Paper 28; 1939.",IOGP,2015/11/25,1997.231 1999.990 2015.062,0
9085,Indian yard (1937),length,9001,0.91439523,1,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British foot taken to be 1895 Benoit value of 12/39.370113m. Rounded to 8 decimal places as 0.30479841. Used from Bangladesh to Vietnam. Previously used in India and Pakistan but superseded.,"G. Bomford; ""The Re-adjustment of the Indian Triangulation""; Survey of India Professional Paper 28; 1939.",IOGP,2015/11/25,1997.231 1999.990 2015.062,0
9086,Indian yard (1962),length,9001,0.9143988,1,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures with a small error as 1 Ind ft=0.3047996m. Used in Pakistan since metrication.,"G. Bomford; ""Geodesy""; 2nd edition 1962",IOGP,2015/11/25,1997.231 1999.990 2007.011 2015.062,0
9087,Indian yard (1975),length,9001,0.9143985,1,Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures as 1 Ind ft=0.3047995m. Used in India since metrication.,"G. Bomford; ""Geodesy""; 3rd edition 1975",IOGP,2015/11/25,1997.231 1999.990 2007.011 2015.062,0
9093,Statute mile,length,9001,1609.344,1,=5280 feet,OGP,IOGP,2015/11/25,2015.062,0
9094,Gold Coast foot,length,9001,6378300,20926201,"Used in Ghana and some adjacent parts of British west Africa prior to metrication, except for the metrication of projection defining parameters when British foot (Sears 1922) used.",Ordnance Survey International,IOGP,2015/11/25,2000.861 2015.062,0
9095,British foot (1936),length,9001,0.3048007491,1,For the 1936 retriangulation OSGB defines the relationship of 10 feet of 1796 to the International metre through the logarithmic relationship (10^0.48401603 exactly). 1 ft = 0.3048007491…m. Also used for metric conversions in Ireland.,"1. ""The Retriangulation of Great Britain"", Ordnance Survey of Great Britain.
2. ""The Irish Grid - A Description of the Co-ordinate Reference System"" published by Ordnance Survey of Ireland, Dublin and Ordnance Survey of Northern Ireland, Belfast.",IOGP,2015/11/25,2002.621 2006.932 2015.062,0
9096,yard,length,9001,0.9144,1,=3 international feet.,OGP,IOGP,2015/11/25,2015.062,0
9097,chain,length,9001,20.1168,1,=22 international yards or 66 international feet.,OGP,IOGP,2015/11/25,2015.062,0
9098,link,length,9001,20.1168,100,=1/100 international chain.,OGP,IOGP,2015/11/25,2015.062,0
9099,British yard (Sears 1922 truncated),length,9001,0.914398,1,Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures.,Defence Geographic Centre,IOGP,2015/11/25,2006.901 2015.062,0
9101,radian,angle,9101,1,1,SI standard unit.,ISO 1000:1992,IOGP,2015/11/25,2015.062,0
9102,degree,angle,9101,3.14159265358979,180,= pi/180 radians,,IOGP,2015/11/25,1996.220 2002.860 2015.062,0
9103,arc-minute,angle,9101,3.14159265358979,10800,1/60th degree = ((pi/180) / 60) radians,,IOGP,2015/11/25,1996.220 2002.860 2015.062,0
9104,arc-second,angle,9101,3.14159265358979,648000,1/60th arc-minute = ((pi/180) / 3600) radians,,IOGP,2015/11/25,1996.220 2002.860 2015.062,0
9105,grad,angle,9101,3.14159265358979,200,=pi/200 radians.,OGP,IOGP,2015/11/25,1996.220 1999.050 2002.860 2015.062,0
9106,gon,angle,9101,3.14159265358979,200,=pi/200 radians,,OGP,2002/11/18,1996.220 2002.860 2015.062,1
9107,degree minute second,angle,9102,,,"Degree representation. Format: signed degrees (integer) - arc-minutes (integer) - arc-seconds (real, any precision). Different symbol sets are in use as field separators, for example º ' "". Convert to degrees using algorithm.",OGP,IOGP,2015/11/25,1996.190 2002.070 2002.780 2015.062,0
9108,degree minute second hemisphere,angle,9102,,,"Degree representation. Format: degrees (integer) - arc-minutes (integer) - arc-seconds (real) - hemisphere abbreviation (single character N S E or W). Different symbol sets are in use as field separators for example º ' "". Convert to deg using algorithm.",OGP,IOGP,2015/11/25,1996.190 2002.070 2002.780 2015.062,0
9109,microradian,angle,9101,1,1000000,rad * 10E-6,ISO 1000.,OGP,1996/10/18,1999.050,0
9110,sexagesimal DMS,angle,9102,,,Pseudo unit. Format: signed degrees - period - minutes (2 digits) - integer seconds (2 digits) - fraction of seconds (any precision). Must include leading zero in minutes and seconds and exclude decimal point for seconds. Convert to deg using algorithm.,OGP,IOGP,2016/12/15,2002.270 2002.780 2008.020 2015.062 2016.047,0
9111,sexagesimal DM,angle,9102,,,Pseudo unit. Format: signed degrees - period - integer minutes (2 digits) - fraction of minutes (any precision). Must include leading zero in minutes and exclude decimal point for minutes. Convert to degree using algorithm.,OGP,IOGP,2016/12/15,2002.070 2002.780 2015.062 2016.047,0
9112,centesimal minute,angle,9101,3.14159265358979,20000,1/100 of a grad and gon = ((pi/200) / 100) radians,http://www.geodesy.matav.hu/,IOGP,2015/11/25,1998.480 1999.510 2002.860 2005.460 2015.062,0
9113,centesimal second,angle,9101,3.14159265358979,2000000,"1/100 of a centesimal minute or 1/10,000th of a grad and gon = ((pi/200) / 10000) radians",http://www.geodesy.matav.hu/,IOGP,2015/11/25,1999.510 2002.860 2005.460 2015.062,0
9114,mil_6400,angle,9101,3.14159265358979,3200,Angle subtended by 1/6400 part of a circle. Approximates to 1/1000th radian. Note that other approximations (notably 1/6300 circle and 1/6000 circle) also exist.,http://www.geodesy.matav.hu/,IOGP,2015/11/25,1999.510 2005.460 2015.062,0
9115,degree minute,angle,9102,,,"Degree representation. Format: signed degrees (integer) - arc-minutes (real, any precision). Different symbol sets are in use as field separators, for example º '. Convert to degrees using algorithm.",OGP,IOGP,2015/11/25,2002.780 2015.062,0
9116,degree hemisphere,angle,9102,,,"Degree representation. Format: degrees (real, any precision) - hemisphere abbreviation (single character N S E or W). Convert to degrees using algorithm.",OGP,IOGP,2015/11/25,2015.062,0
9117,hemisphere degree,angle,9102,,,"Degree representation. Format: hemisphere abbreviation (single character N S E or W) - degrees (real, any precision). Convert to degrees using algorithm.",OGP,IOGP,2015/11/25,2015.062,0
9118,degree minute hemisphere,angle,9102,,,"Degree representation. Format: degrees (integer) - arc-minutes (real, any precision) - hemisphere abbreviation (single character N S E or W). Different symbol sets are in use as field separators, for example º '. Convert to degrees using algorithm.",OGP,IOGP,2015/11/25,2015.062,0
9119,hemisphere degree minute,angle,9102,,,"Degree representation. Format: hemisphere abbreviation (single character N S E or W) - degrees (integer) - arc-minutes (real, any precision). Different symbol sets are in use as field separators, for example º '. Convert to degrees using algorithm.",OGP,IOGP,2015/11/25,2015.062,0
9120,hemisphere degree minute second,angle,9102,,,"Degree representation. Format: hemisphere abbreviation (single character N S E or W) - degrees (integer) - arc-minutes (integer) - arc-seconds (real). Different symbol sets are in use as field separators for example º ' "". Convert to deg using algorithm.",OGP,IOGP,2015/11/25,2015.062,0
9121,sexagesimal DMS.s,angle,9104,,,Pseudo unit. Format: signed degrees - minutes (2 digits) - integer seconds (2 digits) - period - fraction of seconds (any precision). Must include leading zero in minutes and seconds and include decimal point for seconds. Convert to deg using algorithm.,ISO 6709:1983.,IOGP,2016/12/15,2015.062 2016.047,0
9122,degree (supplier to define representation),angle,9101,3.14159265358979,180,"= pi/180 radians. The degree representation (e.g. decimal, DMSH, etc.) must be clarified by suppliers of data associated with this code.",OGP,IOGP,2015/11/25,2015.062,0
9201,unity,scale,9201,1,1,,,IOGP,2015/11/25,2015.062,0
9202,parts per million,scale,9201,1,1000000,,,IOGP,2015/11/25,2013.021 2013.037 2015.062,0
9203,coefficient,scale,9201,1,1,Used when parameters are coefficients. They inherently take the units which depend upon the term to which the coefficient applies.,OGP,OGP,2004/09/14,2004.530,0
9204,Bin width 330 US survey feet,length,9001,3960,39.37,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9205,Bin width 165 US survey feet,length,9001,1980,39.37,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9206,Bin width 82.5 US survey feet,length,9001,990,39.37,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9207,Bin width 37.5 metres,length,9001,37.5,1,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9208,Bin width 25 metres,length,9001,25,1,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9209,Bin width 12.5 metres,length,9001,12.5,1,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9210,Bin width 6.25 metres,length,9001,6.25,1,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9211,Bin width 3.125 metres,length,9001,3.125,1,,OGP,OGP,2000/10/19,2000.590 2011.106,1
9300,British foot (Sears 1922 truncated),length,9001,0.914398,3,"Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures; this truncated ratio (0.914398, UoM code 9099) then converted to other imperial units. 3 ftSe(T) = 1 ydSe(T).",Defence Geographic Centre,IOGP,2015/11/25,2006.901 2015.062,0
9301,British chain (Sears 1922 truncated),length,9001,20.116756,1,"Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures; this truncated ratio (0.914398, UoM code 9099) then converted to other imperial units. 1 chSe(T) = 22 ydSe(T). Used in metrication of Malaya RSO grid.",Defence Geographic Centre,IOGP,2015/11/25,2006.901 2015.062,0
9302,British link (Sears 1922 truncated),length,9001,20.116756,100,"Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures; this truncated ratio (0.914398, UoM code 9099) then converted to other imperial units. 100 lkSe(T) = 1 chSe(T).",Defence Geographic Centre,IOGP,2015/11/25,2006.901 2015.062,0
1 uom_code unit_of_meas_name unit_of_meas_type target_uom_code factor_b factor_c remarks information_source data_source revision_date change_id deprecated
2 1024 bin scale 9201 1 1 OGP OGP 2012/07/14 2011.106 0
3 1025 millimetre length 9001 1 1000 ISO 1000. IOGP 2015/11/25 2013.021 2015.062 0
4 1026 metres per second length 1026 1 1 Length rate. OGP IOGP 2015/11/25 2013.021 2015.062 0
5 1027 millimetres per year length 1026 1 31556925445 Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. ISO 1000. OGP 2013/09/02 2013.021 2013.042 0
6 1028 parts per billion scale 9201 1 1000000000 Billion is internationally ambiguous, in different languages being 1E+9 and 1E+12. One billion taken here to be 1E+9. OGP OGP 2013/05/29 2013.021 0
7 1029 year time 1040 31556925.445 1 International Union of Geological Sciences (IUGS) and International Union of Pure and Applied Chemistry (IUPAC). Pure Appl. Chem., Vol. 83, No. 5, pp. 1159–1162, 2011. OGP 2013/05/28 2013.021 0
8 1030 parts per billion per year scale 1036 1 3.1556925445e+16 Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. Billion is internationally ambiguous, in different languages being 1E+9 and 1E+12. One billion taken here to be 1E+9. ISO 1000. IOGP 2015/06/24 2013.021 2013.042 2013.067 2015.036 0
9 1031 milliarc-second angle 9101 3.14159265358979 648000000 = ((pi/180) / 3600 / 1000) radians IOGP 2015/11/25 2013.021 2015.062 0
10 1032 milliarc-seconds per year angle 1035 3.14159265358979 2.044888768836e+16 = ((pi/180) / 3600 / 1000) radians per year. Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. OGP 2013/09/02 2013.021 2013.042 0
11 1033 centimetre length 9001 1 100 ISO 1000. IOGP 2015/11/25 2013.021 2015.062 0
12 1034 centimetres per year length 1026 1 3155692544.5 Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. ISO 1000. OGP 2013/09/02 2013.021 2013.042 0
13 1035 radians per second angle 1035 1 1 Angle rate. OGP IOGP 2015/11/25 2013.021 2015.062 0
14 1036 unity per second scale 1036 1 1 Scale rate. OGP OGP 2013/05/29 2013.021 0
15 1040 second time 1040 1 1 Not to be confused with the angle unit arc-second. ISO 1000. IOGP 2015/11/25 2013.021 2015.062 0
16 1041 parts per million per year scale 1036 1 31556925445000 Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. OGP 2013/09/02 2013.021 2013.037 2013.042 0
17 1042 metres per year length 1026 1 31556925.445 Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. OGP OGP 2013/09/02 2013.021 2013.042 0
18 1043 arc-seconds per year angle 1035 3.14159265358979 20448887688360 =((pi/180) / 3600) radians per year. Year taken to be IUGS definition of 31556925.445 seconds; see UoM code 1029. IOGP 2015/03/06 2013.021 2013.042 2015.014 0
19 9001 metre length 9001 1 1 Also known as International metre. SI standard unit. ISO 1000. IOGP 2015/11/25 2015.062 0
20 9002 foot length 9001 0.3048 1 ISO 1000; 1958 IOGP 2015/11/25 2015.062 0
21 9003 US survey foot length 9001 12 39.37 Used in USA. OGP IOGP 2015/11/25 1999.990 2015.062 0
22 9005 Clarke's foot length 9001 0.3047972654 1 Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping. Australian Land Information Group www.auslig.gov.au IOGP 2015/11/25 1997.233 1999.990 2000.050 2005.370 2005.460 2015.062 0
23 9014 fathom length 9001 1.8288 1 = 6 feet. IOGP 2015/11/25 2015.062 0
24 9030 nautical mile length 9001 1852 1 IOGP 2015/11/25 1996.240 2015.062 0
25 9031 German legal metre length 9001 1.0000135965 1 Used in Namibia. Chief Directorate Surveys and Land Information; Mowbray; South Africa IOGP 2015/11/25 2015.062 0
26 9033 US survey chain length 9001 792 39.37 Used in USA primarily for public lands cadastral work. Bureau of Land Management technical bulletin 6 (1973) and Standard Field Tables 8th edition (1956). IOGP 2015/11/25 1999.990 2015.062 0
27 9034 US survey link length 9001 7.92 39.37 Used in USA primarily for public lands cadastral work. Bureau of Land Management technical bulletin 6 (1973) and Standard Field Tables 8th edition (1956). IOGP 2015/11/25 1999.990 2015.062 0
28 9035 US survey mile length 9001 63360 39.37 Used in USA primarily for public lands cadastral work. Bureau of Land Management technical bulletin 6 (1973) and Standard Field Tables 8th edition (1956). IOGP 2015/11/25 1999.990 2015.062 0
29 9036 kilometre length 9001 1000 1 ISO 1000. IOGP 2015/11/25 2015.062 0
30 9037 Clarke's yard length 9001 0.9143917962 1 =3 Clarke's feet. Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping. Australian Land Information Group www.auslig.gov.au IOGP 2015/11/25 1997.233 1999.990 2005.370 2005.460 2015.062 0
31 9038 Clarke's chain length 9001 20.1166195164 1 =22 Clarke's yards. Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping. Australian Land Information Group www.auslig.gov.au IOGP 2015/11/25 1997.233 1999.990 2005.370 2005.460 2015.062 0
32 9039 Clarke's link length 9001 0.201166195164 1 =1/100 Clarke's chain. Assumes Clarke's 1865 ratio of 1 British foot = 0.3047972654 French legal metres applies to the international metre. Used in older Australian, southern African & British West Indian mapping. Australian Land Information Group www.auslig.gov.au IOGP 2015/11/25 1997.233 1999.990 2005.370 2005.460 2015.062 0
33 9040 British yard (Sears 1922) length 9001 36 39.370147 Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping. G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
34 9041 British foot (Sears 1922) length 9001 12 39.370147 Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping. G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
35 9042 British chain (Sears 1922) length 9001 792 39.370147 Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping. G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
36 9043 British link (Sears 1922) length 9001 7.92 39.370147 Uses Sear's 1922 British yard-metre ratio as given by Bomford as 39.370147 inches per metre. Used in East Malaysian and older New Zealand mapping. G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
37 9050 British yard (Benoit 1895 A) length 9001 0.9143992 1 Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine. J.S.Clark; "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2006.260 2015.062 0
38 9051 British foot (Benoit 1895 A) length 9001 0.9143992 3 Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine. J.S.Clark; "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2006.260 2015.062 0
39 9052 British chain (Benoit 1895 A) length 9001 20.1167824 1 Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine. J.S.Clark; "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2006.260 2015.062 0
40 9053 British link (Benoit 1895 A) length 9001 0.201167824 1 Uses Benoit's 1895 British yard-metre ratio as given by Clark as 0.9143992 metres per yard. Used for deriving metric size of ellipsoid in Palestine. J.S.Clark; "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2006.260 2015.062 0
41 9060 British yard (Benoit 1895 B) length 9001 36 39.370113 G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
42 9061 British foot (Benoit 1895 B) length 9001 12 39.370113 Uses Benoit's 1895 British yard-metre ratio as given by Bomford as 39.370113 inches per metre. Used in West Malaysian mapping. G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
43 9062 British chain (Benoit 1895 B) length 9001 792 39.370113 Uses Benoit's 1895 British yard-metre ratio as given by Bomford as 39.370113 inches per metre. Used in West Malaysian mapping. G. Bomford "Geodesy" 2nd edition 1962; after J.S.Clark "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
44 9063 British link (Benoit 1895 B) length 9001 7.92 39.370113 Uses Benoit's 1895 British yard-metre ratio as given by Bomford as 39.370113 inches per metre. Used in West Malaysian mapping. G. Bomford; "Geodesy"; 3rd edition 1975 IOGP 2015/11/25 1997.233 1999.990 2015.062 0
45 9070 British foot (1865) length 9001 0.9144025 3 Uses Clark's estimate of 1853-1865 British foot-metre ratio of 0.9144025 metres per yard. Used in 1962 and 1975 estimates of Indian foot. J.S.Clark; "Remeasurement of the Old Length Standards"; Empire Survey Review no. 90; 1953. IOGP 2015/11/25 1997.233 1999.990 2015.062 0
46 9080 Indian foot length 9001 12 39.370142 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (= 3 British feet) taken to be J.S.Clark's 1865 value of 0.9144025 metres. G. Bomford; "The Re-adjustment of the Indian Triangulation"; Survey of India Professional Paper 28; 1939. IOGP 2015/11/25 1997.231 1999.990 2015.062 0
47 9081 Indian foot (1937) length 9001 0.30479841 1 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British foot taken to be 1895 Benoit value of 12/39.370113m. Rounded to 8 decimal places as 0.30479841. Used from Bangladesh to Vietnam. Previously used in India and Pakistan but superseded. G. Bomford; "The Re-adjustment of the Indian Triangulation"; Survey of India Professional Paper 28; 1939. IOGP 2015/11/25 1997.231 1999.990 2015.062 0
48 9082 Indian foot (1962) length 9001 0.3047996 1 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures with a small error as 1 Ind ft=0.3047996m. Used in Pakistan since metrication. G. Bomford; "Geodesy"; 2nd edition 1962 IOGP 2015/11/25 1997.231 1999.990 2007.011 2015.062 0
49 9083 Indian foot (1975) length 9001 0.3047995 1 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures as 1 Ind ft=0.3047995m. Used in India since metrication. G. Bomford; "Geodesy"; 3rd edition 1975 IOGP 2015/11/25 1997.231 1999.990 2007.011 2015.062 0
50 9084 Indian yard length 9001 36 39.370142 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (= 3 British feet) taken to be J.S.Clark's 1865 value of 0.9144025 metres. G. Bomford; "The Re-adjustment of the Indian Triangulation"; Survey of India Professional Paper 28; 1939. IOGP 2015/11/25 1997.231 1999.990 2015.062 0
51 9085 Indian yard (1937) length 9001 0.91439523 1 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British foot taken to be 1895 Benoit value of 12/39.370113m. Rounded to 8 decimal places as 0.30479841. Used from Bangladesh to Vietnam. Previously used in India and Pakistan but superseded. G. Bomford; "The Re-adjustment of the Indian Triangulation"; Survey of India Professional Paper 28; 1939. IOGP 2015/11/25 1997.231 1999.990 2015.062 0
52 9086 Indian yard (1962) length 9001 0.9143988 1 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures with a small error as 1 Ind ft=0.3047996m. Used in Pakistan since metrication. G. Bomford; "Geodesy"; 2nd edition 1962 IOGP 2015/11/25 1997.231 1999.990 2007.011 2015.062 0
53 9087 Indian yard (1975) length 9001 0.9143985 1 Indian Foot = 0.99999566 British feet (A.R.Clarke 1865). British yard (3 feet) taken to be J.S. Clark's 1865 value of 0.9144025m. Rounded to 7 significant figures as 1 Ind ft=0.3047995m. Used in India since metrication. G. Bomford; "Geodesy"; 3rd edition 1975 IOGP 2015/11/25 1997.231 1999.990 2007.011 2015.062 0
54 9093 Statute mile length 9001 1609.344 1 =5280 feet OGP IOGP 2015/11/25 2015.062 0
55 9094 Gold Coast foot length 9001 6378300 20926201 Used in Ghana and some adjacent parts of British west Africa prior to metrication, except for the metrication of projection defining parameters when British foot (Sears 1922) used. Ordnance Survey International IOGP 2015/11/25 2000.861 2015.062 0
56 9095 British foot (1936) length 9001 0.3048007491 1 For the 1936 retriangulation OSGB defines the relationship of 10 feet of 1796 to the International metre through the logarithmic relationship (10^0.48401603 exactly). 1 ft = 0.3048007491…m. Also used for metric conversions in Ireland. 1. "The Retriangulation of Great Britain", Ordnance Survey of Great Britain. 2. "The Irish Grid - A Description of the Co-ordinate Reference System" published by Ordnance Survey of Ireland, Dublin and Ordnance Survey of Northern Ireland, Belfast. IOGP 2015/11/25 2002.621 2006.932 2015.062 0
57 9096 yard length 9001 0.9144 1 =3 international feet. OGP IOGP 2015/11/25 2015.062 0
58 9097 chain length 9001 20.1168 1 =22 international yards or 66 international feet. OGP IOGP 2015/11/25 2015.062 0
59 9098 link length 9001 20.1168 100 =1/100 international chain. OGP IOGP 2015/11/25 2015.062 0
60 9099 British yard (Sears 1922 truncated) length 9001 0.914398 1 Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures. Defence Geographic Centre IOGP 2015/11/25 2006.901 2015.062 0
61 9101 radian angle 9101 1 1 SI standard unit. ISO 1000:1992 IOGP 2015/11/25 2015.062 0
62 9102 degree angle 9101 3.14159265358979 180 = pi/180 radians IOGP 2015/11/25 1996.220 2002.860 2015.062 0
63 9103 arc-minute angle 9101 3.14159265358979 10800 1/60th degree = ((pi/180) / 60) radians IOGP 2015/11/25 1996.220 2002.860 2015.062 0
64 9104 arc-second angle 9101 3.14159265358979 648000 1/60th arc-minute = ((pi/180) / 3600) radians IOGP 2015/11/25 1996.220 2002.860 2015.062 0
65 9105 grad angle 9101 3.14159265358979 200 =pi/200 radians. OGP IOGP 2015/11/25 1996.220 1999.050 2002.860 2015.062 0
66 9106 gon angle 9101 3.14159265358979 200 =pi/200 radians OGP 2002/11/18 1996.220 2002.860 2015.062 1
67 9107 degree minute second angle 9102 Degree representation. Format: signed degrees (integer) - arc-minutes (integer) - arc-seconds (real, any precision). Different symbol sets are in use as field separators, for example º ' ". Convert to degrees using algorithm. OGP IOGP 2015/11/25 1996.190 2002.070 2002.780 2015.062 0
68 9108 degree minute second hemisphere angle 9102 Degree representation. Format: degrees (integer) - arc-minutes (integer) - arc-seconds (real) - hemisphere abbreviation (single character N S E or W). Different symbol sets are in use as field separators for example º ' ". Convert to deg using algorithm. OGP IOGP 2015/11/25 1996.190 2002.070 2002.780 2015.062 0
69 9109 microradian angle 9101 1 1000000 rad * 10E-6 ISO 1000. OGP 1996/10/18 1999.050 0
70 9110 sexagesimal DMS angle 9102 Pseudo unit. Format: signed degrees - period - minutes (2 digits) - integer seconds (2 digits) - fraction of seconds (any precision). Must include leading zero in minutes and seconds and exclude decimal point for seconds. Convert to deg using algorithm. OGP IOGP 2016/12/15 2002.270 2002.780 2008.020 2015.062 2016.047 0
71 9111 sexagesimal DM angle 9102 Pseudo unit. Format: signed degrees - period - integer minutes (2 digits) - fraction of minutes (any precision). Must include leading zero in minutes and exclude decimal point for minutes. Convert to degree using algorithm. OGP IOGP 2016/12/15 2002.070 2002.780 2015.062 2016.047 0
72 9112 centesimal minute angle 9101 3.14159265358979 20000 1/100 of a grad and gon = ((pi/200) / 100) radians http://www.geodesy.matav.hu/ IOGP 2015/11/25 1998.480 1999.510 2002.860 2005.460 2015.062 0
73 9113 centesimal second angle 9101 3.14159265358979 2000000 1/100 of a centesimal minute or 1/10,000th of a grad and gon = ((pi/200) / 10000) radians http://www.geodesy.matav.hu/ IOGP 2015/11/25 1999.510 2002.860 2005.460 2015.062 0
74 9114 mil_6400 angle 9101 3.14159265358979 3200 Angle subtended by 1/6400 part of a circle. Approximates to 1/1000th radian. Note that other approximations (notably 1/6300 circle and 1/6000 circle) also exist. http://www.geodesy.matav.hu/ IOGP 2015/11/25 1999.510 2005.460 2015.062 0
75 9115 degree minute angle 9102 Degree representation. Format: signed degrees (integer) - arc-minutes (real, any precision). Different symbol sets are in use as field separators, for example º '. Convert to degrees using algorithm. OGP IOGP 2015/11/25 2002.780 2015.062 0
76 9116 degree hemisphere angle 9102 Degree representation. Format: degrees (real, any precision) - hemisphere abbreviation (single character N S E or W). Convert to degrees using algorithm. OGP IOGP 2015/11/25 2015.062 0
77 9117 hemisphere degree angle 9102 Degree representation. Format: hemisphere abbreviation (single character N S E or W) - degrees (real, any precision). Convert to degrees using algorithm. OGP IOGP 2015/11/25 2015.062 0
78 9118 degree minute hemisphere angle 9102 Degree representation. Format: degrees (integer) - arc-minutes (real, any precision) - hemisphere abbreviation (single character N S E or W). Different symbol sets are in use as field separators, for example º '. Convert to degrees using algorithm. OGP IOGP 2015/11/25 2015.062 0
79 9119 hemisphere degree minute angle 9102 Degree representation. Format: hemisphere abbreviation (single character N S E or W) - degrees (integer) - arc-minutes (real, any precision). Different symbol sets are in use as field separators, for example º '. Convert to degrees using algorithm. OGP IOGP 2015/11/25 2015.062 0
80 9120 hemisphere degree minute second angle 9102 Degree representation. Format: hemisphere abbreviation (single character N S E or W) - degrees (integer) - arc-minutes (integer) - arc-seconds (real). Different symbol sets are in use as field separators for example º ' ". Convert to deg using algorithm. OGP IOGP 2015/11/25 2015.062 0
81 9121 sexagesimal DMS.s angle 9104 Pseudo unit. Format: signed degrees - minutes (2 digits) - integer seconds (2 digits) - period - fraction of seconds (any precision). Must include leading zero in minutes and seconds and include decimal point for seconds. Convert to deg using algorithm. ISO 6709:1983. IOGP 2016/12/15 2015.062 2016.047 0
82 9122 degree (supplier to define representation) angle 9101 3.14159265358979 180 = pi/180 radians. The degree representation (e.g. decimal, DMSH, etc.) must be clarified by suppliers of data associated with this code. OGP IOGP 2015/11/25 2015.062 0
83 9201 unity scale 9201 1 1 IOGP 2015/11/25 2015.062 0
84 9202 parts per million scale 9201 1 1000000 IOGP 2015/11/25 2013.021 2013.037 2015.062 0
85 9203 coefficient scale 9201 1 1 Used when parameters are coefficients. They inherently take the units which depend upon the term to which the coefficient applies. OGP OGP 2004/09/14 2004.530 0
86 9204 Bin width 330 US survey feet length 9001 3960 39.37 OGP OGP 2000/10/19 2000.590 2011.106 1
87 9205 Bin width 165 US survey feet length 9001 1980 39.37 OGP OGP 2000/10/19 2000.590 2011.106 1
88 9206 Bin width 82.5 US survey feet length 9001 990 39.37 OGP OGP 2000/10/19 2000.590 2011.106 1
89 9207 Bin width 37.5 metres length 9001 37.5 1 OGP OGP 2000/10/19 2000.590 2011.106 1
90 9208 Bin width 25 metres length 9001 25 1 OGP OGP 2000/10/19 2000.590 2011.106 1
91 9209 Bin width 12.5 metres length 9001 12.5 1 OGP OGP 2000/10/19 2000.590 2011.106 1
92 9210 Bin width 6.25 metres length 9001 6.25 1 OGP OGP 2000/10/19 2000.590 2011.106 1
93 9211 Bin width 3.125 metres length 9001 3.125 1 OGP OGP 2000/10/19 2000.590 2011.106 1
94 9300 British foot (Sears 1922 truncated) length 9001 0.914398 3 Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures; this truncated ratio (0.914398, UoM code 9099) then converted to other imperial units. 3 ftSe(T) = 1 ydSe(T). Defence Geographic Centre IOGP 2015/11/25 2006.901 2015.062 0
95 9301 British chain (Sears 1922 truncated) length 9001 20.116756 1 Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures; this truncated ratio (0.914398, UoM code 9099) then converted to other imperial units. 1 chSe(T) = 22 ydSe(T). Used in metrication of Malaya RSO grid. Defence Geographic Centre IOGP 2015/11/25 2006.901 2015.062 0
96 9302 British link (Sears 1922 truncated) length 9001 20.116756 100 Uses Sear's 1922 British yard-metre ratio (UoM code 9040) truncated to 6 significant figures; this truncated ratio (0.914398, UoM code 9099) then converted to other imperial units. 100 lkSe(T) = 1 chSe(T). Defence Geographic Centre IOGP 2015/11/25 2006.901 2015.062 0