A large pulley we found was made and used in the theaters in the 1920's. 1926 seems to be the most common year these came up. They were made to be heavy duty as they were pulling a lot of cable / rope with a lot of iron weights hanging from them.These are what were used to bring the curtains up and down. It has been cleaned and greased. It is very serviceable and like new. The base is 15 1/2 inches across. The height is 9 1/2 inches. It weighs just under 10 pounds.