units_us1 http://www.openmath.org/cd/units_us1.ocd 2006-08-27 experimental 2004-08-27 3 0 This CD defines symbols to represent U.S. customary unit measures. foot_us_survey This symbol represents the measure of one U.S. Survey foot. 1 U.S. Survey foot = 1200/3937 metres 1 1200 3937 yard_us_survey This symbol represents the measure of one U.S. Survey yard. 1 U.S. Survey yard = 3 U.S. Survey feet 1 3 mile_us_survey This symbol represents the measure of one U.S. Survey mile. 1 U.S. Survey mile = 5280 U.S. Survey feet 1 5280 acre_us_survey This symbol represents the measure of one U.S. Survey acre. 1 U.S. Survey acre = 4840 square U.S. Survey yards 1 4840 pint_us_dry This symbol represents the measure of one U.S. dry pint. 1 U.S. dry pint = 0.5506104713575 litres 1 pint_us_liquid This symbol represents the measure of one U.S. liquid pint. 1 U.S. liquid pint = 0.473176473 litres 1