Sikes Hydrometer by Husbands and Clarke, Bristol, England in its original mahogany box. 19th century. The Sikes Hydrometer was used to determine the alcohol content of spirits in determining its proof. This set includes a brass float, thermometer, and 10 weights used to measure the specific gravity of the liquid (labeled 10, 20, 30, 40, 50, 60, 70, 80, 90, plus the calibration cap weight). Each weight is stamped with a serial number that matches the one on the float, #15867 (the #20 weight i ...click for details
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