ID:
2558
Maker's Name:
Bates
Where made:
England
Dimensions:
25 × 8.3 × 5.3 cm
Although similar in appearance to a Sikes' hydrometer used for determining the alcohol content of beverages, this instrument is meant tfor liquids with densities greater than that of water, for example, sugar solutions. In this case, the small weights are attached to the bottom of the float to provide sensitive readings over several ranges. For example, with the weight marked 1000 attached, the scale will read the 'specific gravity' (density in gm /cc) from 1.000 (pure water) to 1.030. This can be used to determine the concentration of a known solute at a particular temperature. Originally the case would have contained a thermometer, and density/concentration conversion tables were available.
