Steelyard

n.

1.

A form of balance in which the body to be weighed is suspended from the shorter arm of a lever, which turns on a fulcrum, and a counterpoise is caused to slide upon the longer arm to produce equilibrium, its place upon this arm (which is notched or graduated) indicating the weight; a Roman balance; - very commonly used also in the plural form, steelyards.

Noun

1.

steelyard - a portable balance consisting of a pivoted bar with arms of unequal length Synonyms: beam scale, lever scale

balance, beam scale, lever scale