Glass and Mercury Antique Hydrometer in Original Wooden Box handmade purse Super useful and fun

Super useful and fun

this hand thrown studio pottery vase delivers a pure dose of loveliness

The leather strap that allows the vise to open widely or pull closed is still in good shape

with its smooth surface and gracefully curved lip

Glass and Mercury Antique Hydrometer in Original Wooden Box handmade purse Super useful and funAt first I thought this antique Griebel Instrument Co. hydrometer was an old thermometer, until I noted that the numbers on the side run 0 to 6 rather than showing temperatures. Ive since learned that a hydrometer is used for measuring the relative density of liquids based on buoyancy: you pour liquid into a container, lower the hydrometer into it until it floats, and then the point at which the surface of the liquid touches the stem of the hydrometer