Unit_Name Unit_Code Unit_Abbreviation Alias m_or_rad_per_unit a b c d Remarks Revision_Date name code abbr - - - - - - - - metre 9001 m meter; international metre 1 0 1 1 0 02-Jun-95 foot 9002 ft international foot 0.3048000000 0 0.3048 1 0 ISO 1958 02-Jun-95 US survey foot 9003 ft US American foot 0.3048006096 0 12 39.37 0 Used in USA 02-Jun-95 modified American foot 9004 ft MA 0.3048122530 0 12.0004584 39.37 0 1.0000382 US Survey feet. Used for old Michigan TM projections. 02-Jun-95 Clarke's foot 9005 ft (Cla) Cape foot; South African geodetic foot 0.3047972651 0 12 39.370432 0 Assumes Clarke's 1865 ratio of 1 French legal metre = 39.370432 imperial inches applies to the international metre. Used in southern African & Jamaica mapping. 02-Jun-95 Indian foot 9006 ft Ind Indian geodetic foot 0.3047995142 0 12 39.370141 0 Indian Foot = 0.9999566 British feet. British foot taken to be 1865 value of 0.304800837 metres. 02-Jun-95 link 9007 lk (Cla) link (Clarke's ratio) 0.2011661950 0 7.92 39.370432 0 Assumes Clarke's 1865 ratio of 1 French legal metre = 39.370432 imperial inches applies to the international metre. Used in Trinidad and Tobago mapping. 02-Jun-95 link (Benoit) 9008 lk (Ben) link 0.2011678249 0 7.92 39.370113 0 Used in West Malaysian mapping. 02-Jun-95 link (Sears) 9009 lk (Sear) link 0.2011676512 0 7.92 39.370147 0 Used in East Malaysian mapping. 02-Jun-95 chain (Benoit) 9010 ch (Ben) chain 20.1167824944 0 792 39.370113 0 Used in West Malaysian mapping. 02-Jun-95 chain (Sears) 9011 ch (Sear) chain 20.1167651216 0 792 39.370147 0 Used in East Malaysian mapping. 02-Jun-95 yard (Sears) 9012 yd (Sear) yard 0.9143984146 0 36 39.370147 0 Used in older New Zealand mapping. 02-Jun-95 Indian yard 9013 yd Ind yard 0.9143985425 0 36 39.370141 0 = 3 Indian feet 02-Jun-95 fathom 9014 f 1.8288000000 0 1.8288 1 0 =6 feet. 02-Jun-95 International nautical mile 9015 NM 1852.0000000000 0 1852 1 0 02-Jun-95 radian 9101 rad 1.0000000000 0 1 1 0 degree 9102 deg 0.0174532925 0 3.141592654 180 0 pi/180 02-Jun-95 arc-minute 9103 min 0.0002908882 0 3.141592654 10800 0 (pi/180) / 60 02-Jun-95 arc-second 9104 sec 0.0000048481 0 3.141592654 648000 0 (pi/180) / 3600 02-Jun-95 grad 9105 0.0157079633 0 3.141592654 200 0 pi/200 02-Jun-95 gon 9106 0.0157079633 0 3.141592654 200 0 pi/200 02-Jun-95 9107 DMS Degrees-minutes -seconds format 02-Jun-95 9108 DMSH Degrees-minutes -seconds-hemisphere format 02-Jun-95