What can you tell me about steelyard scales?

Answer by  cangel818 (981)

The Romans probably invented it. It is a beam on a fixed fulcrum. The arms of are not equal. The shorter arm has a pan attached to a hook. The longer has a weight. The weight is moved along the arm until the beam becomes horizontal and balanced.

Answer by  alia (22)

steelyard scales is a scale that using by people many time ago especially by chinese seller to measures the product they sale. Its an antique thing nowadays.