A mahogany cased Sikes Hydrometer by Brown of Glasgow, dated 1896.
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. The Sikes Hydrometer was, for very many years, the standard means of determining the alcohol content of spirits and hence the duty payable.
A very good quality item, this one is in perfect condition and comes with a complete set of weights with matching numbers and a complete and working thermometer. The bulb has no dents and the original lining is still intact. Both lid closures are in place. A fascinating piece of history in as near perfect condition as you will find.