Antique gilded brass Sikes hydrometer with accompanying lab glass and 9 small brass weights in original velvet lined mahogany case. Good condition, velvet is soiled and slide rule no longer present.

Hydrometers were used professionally in a few industries including brewing and for such activities as home brewing. 

A hydrometer was used for measuring specific gravity (how heavy a liquid is compared to water) in alcoholic drinks and other liquids.  Later replaced by glass, in the 19th century hydrometers like this were made out of brass. It would tell the brewer about the strength of the alcohol.

£65.00 including postage to U.K. zone 1 addresses.

For postage costs to addresses outside U.K. zone 1 and overseas postage please enquire prior to placing your order thank you.