Delux Hydrometer J.Long pre- 1884
Lot number: 460578
Winning bid: £105
The purpose of a hydrometer is to determine the specific gravity of a liquid. From this it is often possible to determine the composition or strength of the liquid. This was, for very many years, the standard means of determining the alcohol content of spirits and hence the duty payable.
In wooden box with brass instruments.
Featured in The 46th Auction, ended February 1, 2015
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