Attachment for adding weights to scale beam

A weight scale with a balancing beam, pivot means intermediate of the ends of the beam, a slidable counterpoise on the beam on one side of the pivot means, adjustable counterweight zero-balancing means for the counterpoise on the other side of the pivot means, the improvement which comprises:

• a weight holder comprising a vertical post for retaining weight units, and clamp means on said post for removably and adjustably attaching the same to the beam at a selected position along the length thereof on said one side of the pivot means, said weight units each comprising a disc with a hole through the center thereof for engaging over the vertical post of the weight holder, a second counterweight, and clamp means for removably and adjustably mounting the second counterweight at a selected position along the length of the beam on said other side of the pivot means, whereby to counter balance the weight of the weight holder and the first-mentioned clamp means.