Proof Distillation Vinometer Gadgets Tester Hydrometer Alcohol Meter Checker Kits Length of box: 23cm Width of box: 9cm Details : The 1st hydrometer measures 0 - 40 percent alcohol. The 2nd hydrometer measures 40 - 70 percent alcohol The 3rd hydrometer measures 70-100 percent alcohol This kit also include a 0-50 thermometer