Hydrometer, DURAC, 0/20%, Proof Formerly Part# 640

HB Instruments Hydrometer, Alcohol Proof, 0 to 20% Range, 0.2 Division, 300mm L, 0.2% Accuracy, 60°F Standardizing Temperature, F Internal Revenue Code, For Determining Proof of Ethyl Alcohol Spirits, Made According to the Bureau of Internal Revenue, US Treasury Department, Individually Serialized, Feature Metal Ballast, Include Multi-language Statement of Accuracy, Tested and Calibrated in Exclusive Triple Accredited/Registered ISO/IEC 17025:2005, A2LA Accredited Laboratory Against Equipment whose Calibration is Traceable to NIST and DAkkS - BEL