The Proof and Tralles Hydrometer is a handheld manual tool designed for measuring the alcohol content in distilled liquor. Made of glass with a clear color, this hydrometer is easy to clean and operate. Standing at less than 20 inches tall, it is a practical and reliable option for home distilling and wine making enthusiasts in France. With its origins in France, this hydrometer is a must-have in any kitchen, dining, or bar setup for those looking to accurately determine the proof of their spirits.