Sikes' Hydrometer circa 1920s
The set comprises of a mahogany box with purple felt lining and fitted pad, which house the brass weights, hydrometer float and thermometer. The inset ivory cartouche on the lid of the case states the manufacturer to be a Loftus, 146 Oxford Street.
These sets were produced for use by customs officials in the testing of alcoholic strength of distilled whisky/spirit once the cask had been removed from it's bonded warehouse and duty was required by law to be calculated and paid.
A fascinating piece of history surrounding the production process of Scotch Whisky.