units_imperial1 http://www.openmath.org/cd/units_imperial1.ocd 2004-04-01 experimental 2003-08-21 3 0 arith1 relation1 units_metric1 units_time1 This CD defines symbols to represent imperial standard measures. foot This symbol represents the measure of one foot. This is the standard imperial measure for distance. 1 foot = 0.3048 metres 1 0.3048 yard This symbol represents the measure of one yard. This is a standard imperial measure for distance, defined in terms of the foot. 1 yard = 3 feet 1 3 mile This symbol represents the measure of one (land, or statute) mile. This is a standard imperial measure for distance, defined in terms of the foot. 1 mile = 5280 feet 1 5280 acre This symbol represents the measure of one acre. This is a standard imperial measure for area. 1 acre = 4840 square yards 1 4840 pint This symbol represents the measure of one (imperial) pint. This is the standard imperial measure for volume. See units_us1 for the U.S. pint. miles_per_hr This symbol represents the measure of one mile per hour. This is a standard imperial measure for speed. 1 miles_per_hr = 1 mile in 1 hour miles_per_hr_sqrd This symbol represents the measure of one mile per hour squared. This is a standard imperial measure for acceleration. 1 miles_per_hr_sqrd = 1 mile_per_hr (change) in 1 hour pound_mass This symbol represents the measure of the mass which weighs one pound under the influence of standard gravity. pound_force This symbol represents the measure of force of one pound. degree_Fahrenheit This symbol represents the measure of one degree Fahrenheit. This is the standard imperial measure for temperature. bar This symbol represents the measure of one bar. This is the standard imperial measure for pressure.