This aluminum juicer is called the Gem Squeezer has three parts. From what I can determine it is from the 1940’s. The handle moves easily and turns the juicer top. It has a base that holds the juice which is 41/2 inch round and 3 ¼ inches tall. It has a grove to set the handle in. The cover for the base has holes around the edge with a post in the center and a hand crank with a wood handle. The top portion has the classic dome shape with a round gear on the bottom which sets on the post. The total piece is 6 ¼ inches high. The base reads on the bottom The Gem Squeezer Patent Pending Made by Quam Nichols Co. Chicago. The base has four round dime size legs that are about ¼ inch tall. There is a black piece in two of the legs that feels like wood but the other two are hollow as they are missing. It does not alter appearance or how it stands. Shipping weight is 1 pound. This vintage piece is quite ingenious and a very effective kitchen tool.
Juicer Reamer Gem Squeezer Aluminum Hand Crank