Clarke hydrometer in case with thermometer, collars and weights, incomplete with cuckoos, made by Dring and Fage, 248 and 20 Tooley Street, London, England, 1840-1920. Clarke hydrometer in case with thermometer 1840-1920
Hypsometer type alcoholometer cased, by Farrow and Jackson of London Hypsometer type alcoholometer cased
Sikes hydrometer, by Buss, 48 Hatton Garden, London, EC, England, 1901-1940. Sikes hydrometer 1901-1940