Clarke's Hydrometer (c. 1755)
1755
Glass 'Technico' specific gravity hydrometer
1930-1980
Glass hydrometer marked Baird & Tatlock
1945-1980
Glass specific gravity hydrometer by unknown maker
1860-1980
Glass hydrometer by unknown maker
1860-1980
Glass hydrometer for battery acid and marked D P Battery Co Ltd
1920-1960
Glass hydrometer by unknown maker
1920-1960
Glass specific gravity hydrometer marked Gallenkamp
1930-1980
Glass brinometer by unknown maker
1900-1950
Glass hydrometer for battery acid and marked D P Battery Co Ltd
1920-1960
Glass specific gravity hydrometer marked Gallenkamp
1930-1980
Glass hydrometer by unknown (probably German) maker
1870-1940
Glass 'Technico' specific gravity hydrometer
1930-1980
Glass 'Technico' hydrometer
1860-1980
Glass Baume hydrometer made by G H Zeal Ltd
1900-1980
Glass hydrometer by unknown maker
1860-1980
Glass 'Technico' specific gravity hydrometer
1930-1980
Glass hydrometer for battery acid and marked D P Battery Co Ltd
1920-1960
Glass hydrometer by unknown maker
1870-1950
Glass 'Technico' hydrometer. 192mm long. Range 1.700 - 1.750. Lead weight and paper scale. In dark blue cardboard tube
1930-1980
Glass specific gravity hydrometer marked Gallenkamp
1930-1980
Glass specific gravity hydrometer marked Gallenkamp
1930-1980
Glass hydrometer marked Gallenkamp and marked 'Spec. Gew.'
1900-1940
Glass 'streamline' hydrometer marked J W Towers Ltd
1930-1960
Glass Gerber hydrometer
1900-1960
Glass 'streamline' hydrometer marked J W Towers Ltd
1930-1960
Glass 'Technico' hydrometer. 183mm long. Range 1.400 - 1.500. Lead weight and paper scale. In green cardboard tube
1860-1980
Glass hydrometer marked Gallenkamp
1930-1960
Glass 'diabetes' hydrometer by unknown maker
1870-1940
Glass hydrometer by unknown (German) maker
1870-1940
Glass 'Technico' hydrometer. 184mm long. Range 1.850 - 1.900. Mercury weight and paper scale. In black cardboard tube
1930-1980
Glass 'Technico' specific gravity hydrometer
1930-1980
Glass 'Technico' specific gravity hydrometer
1930-1980
Glass specific gravity hydrometer marked Gallenkamp
1930-1980
Clarke's export hydrometer in box.
Ivory Hydrometer (c. 1700-30)
1700-1730
Twaddell's No. 1 hydrometer, scale 0-24.
Twaddell's No. 2 hydrometer, scale 24-48.
Nicholson hydrometer by Philip Harris Ltd
1943-1960
Hydrometer
1900-1983
Hydrometer
1900-1983
Early ivory hydrometer in turned wooden case
Urinometer, glass, in leather case
1901-1930
Glass urinometer for diabetes
1940-1960
Glass urinometer in cylindrical case
1850-1950
Two Cawardine saccharometers
Nineteen glass hydrometers (in fitted box) constructed by T.O. Blake
Urinometer, Squibb's, 60 deg.F. Readings from 1000 to 1060 in cardboard cylindrical case
1900-1980
Saccharometer, in case
Dicas hydrometer, by Dicas of Liverpool, c. 1800
1801-1820