Spirit Bubbles hydrometer for measuring alcohol

Catalogue number #265371197

Box of "Spirit Bubbles" Hydrometer

Description:

Set of numbered spirit bubbles in a turned wood mahogany box 3" diameter. Each bubble is of a slightly different volume and is marked with the different specific gravity at which it just floats in an alcoholic liquid. Nineteenth century Price includes carriage. See also the set of bone sliderules for calculating the proof of an alcoholic drink on this web site

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