equal-arm balance

equal-arm balance

[¦ē·kwal ¦ärm ′bal·əns]
(mechanics)
A simple balance in which the distances from the point of support of the balance-arm beam to the two pans at the end of the beam are equal.
References in periodicals archive ?
The Encyclopaedia Britannica assigns the invention of the equal-arm balance "to the time of the ancient Egyptians.