Advertisement for Sikes's Hydrometer, 19th century.
4 0 c m
 
27cm
actual image size: 19cm x 32cm

Advertisement for Sikes's Hydrometer, 19th century.

© Science Museum / Science & Society Picture Library

Description

Advertisement for Sikes's Hydrometer, manufactured by Joshua Long, consisting of an image of the hydrometer with accompanying text. Hydrometers are used to measure the relative density of a liquid and are particularly used for establishing the alcoholic content of liquids. A hydrometer will float higher in a heavy liquid, such as one that has a high quantity of sugar. A les heavy liquid, where the sugar has been turned into alcohol, will make the hydrometer float lower. Sikes's Hydrometer is covered with a body of fine gold to help prevent corrosion. Long also boasts that Sikes's Hydrometer is small enough to fit into a waistcoat pocket. Hydrometers are still used in wine making today.
 

Image Ref.

10422734
 

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