Vintage Chain Hoist made by Weston - D. Round & Son of Cleveland, Ohio U.S.A. 1000 lb. (1/2 heap) Capacity with chain.
One sheave measures about 6" in size, 3.25" side to side and 11.25" in height (top of hook to bottom of wheel). The Other pulley-block measures about 5.25" in dimension, 2" side to side and 10.75" in height (top of hook to bottom of sheave). The chain is approximately 104".