steelyard

steelyard

[steel-yahrd, stil-yerd]
noun
a portable balance with two unequal arms, the longer one having a movable counterpoise and the shorter one bearing a hook or the like for holding the object to be weighed.

Origin:
1630–40; steel + yard1

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World English Dictionary
steelyard (ˈstiːlˌjɑːd)
 
n
a portable balance consisting of a pivoted bar with two unequal arms. The load is suspended from the shorter one and the bar is returned to the horizontal by adding weights to the longer one
 
[C17: from steel + yard1 (in the archaic sense: a rod or pole)]

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