Set of "OK" scales with 2 lb and 1 lb weights. Scale is of solid cast iron. On one side is a round disc to place the weights. This is counter-balanced by a large rectangular shallow pan in which the item to be weighed can be placed. The whole unit balances on a central fulcrum. Round 2 lb weight made of solid cast iron marked "2 lb". Round 1 lb weight made of solid cast iron marked "1 lb".
OK Domestic Use Only Embossed
Scale, 1981.491.1. The Museum of Transport and Technology (MOTAT).