abbreviations: imperial system

Abbreviations for imperial weights and measures take the same form for singular and plural.

• 17 in. (inches)
• 1 ft. (foot)
• 38 yd. (yards)
• 1 mi. (mile)
• 55 mph (miles per hour)
• 4 oz. (ounces)
• 69 lb. (pounds)
• 1 pt. (pint)
• 3 qt. (quarts)
• 4 gal. (gallons)

With this system, area and volume 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:

• 100 sq. ft.
• 20 cu. yd.