Hydrometer, DURAC, 0.640/0.710, Formerly Part# 50

HB Instruments Hydrometer, Specific Gravity, 0.64 to 0.71 Range, 0.001 Division, 165mm L, 0.001 Accuracy, 60°F Standardizing Temperature, Plain Form, Individually Serialized, Feature Metal Ballast, For Liquids Lighter than Water, 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