This is a rare 3-piece antique urine sample hydrometer made of glass and dating back to the 1800s. It is a medical instrument that was commonly used before 1930 and comes brand new in its original box, making it a great addition to any collection or gift for a medical history enthusiast. The hydrometer is a unique and fascinating piece of history, perfect for those interested in the evolution of medical instruments. Glass broken on one. Please review pictures for self satisfaction. As is. No returns accepted.