This vintage juicer is made from glass and I see no flaws in it at all.
Back in the day, one would cut a fruit such as an orange, lemon, lime, etc. in half and press it down on the middle point and while pressing would turn the fruit. The juice would then run down the center part into the bowl.
Complete with spout and handle to pour the freshly made juice into a cup to drink!
Approx 6" in diameter and 4" high at the highest part.