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1.24 The imperial system

Abbreviations for imperial weights and measures take the same form for singular and plural. Area and volume in this system are usually expressed by means of the abbreviations sq. and cu. rather than a superscript numeral. Leave a space between sq. or cu. and the abbreviation that follows it:

  • 1 ft. (foot)
  • 4 oz. (ounces)
  • 38 yd. (yards)
  • 1 mi. (mile)
  • 55 mph (miles per hour)
  • 4 gal. (gallons)
  • 100 sq. ft.
  • 20 cu. yd.
  • 17 in. (inches)