Hydrometer, glass and metal
1801-1900
Glass hydrometer in case
Hydrometer, cased
Saccharometer, in case
Glass hydrometer in case
Glass Baume hydrometer
Hydrometer, glass, for diabetes
Hydrometer, glass, for diabetes, in leather case
Glass urinometer for diabetes, in case, German
Urinometer set
Urinometer with test tube in cylindrical cardboard case
1830-1900
Urinometer
Urinometer, mercury and glass
1830-1900
Urinometer, mercury in glass
1830-1900
Urinometer in leatherette covered cylindrical case
1830-1920
Spirit bubbles
1860-1920
Hydrometer saccharometer
1840-1930
Mercury in glass lactometer, in case
1830-1920
Hydrometer, mercury in glass lactometer, with case
1830-1920
Hydrometer set
Hydrometer, cased
Hydrometer, glass and metal
1801-1900
Glass hydrometer in cardboard case, German
Hydrometer, glass and metal, in cardboard case
2 hydrometers in case
1880-1935
Saccharometer in cardboard case
Glass hydrometer with mercury, in cardboard case
Hydrometer, lead shot in glass
1861-1920
Glass hydrometer in case by James Wooley
Hydrometer made by Tissier, French, 1830-1920
1830-1920
Twaddle hydrometer
1850-1950
Hydrometer, cased, by Brewer Freres
Hydrometer, London, England, 1850-1920
1850-1920
Urinometer with measuring cylinder in leather covered cylindrical case
1830-1900
Urinometer with measuring cylinder
1830-1900
Urinometer with measuring cylinder in leather covered cylindrical case
1830-1900
Urinometer, mercury and glass
1830-1900
Urinometer, mercury in glass
1830-1920
Urinometer, mercury in glass
1851-1920
Urinometer, glass and mercury
1830-1870
Urinometer, glass and mercury
Urinometer, glass and mercury
1830-1920
Urinometer, mercury in glass
1850-1930
Hydrometer, glass, very crude
1830-1900
Glass hydrometer with mercury
1859-1872
Glass hydrometer in wooden case
1871-1906
Hydrometer, alcoholmeter, glass
Hydrometer, with wooden case
1830-1930
Hydrometer, broken, with leather case
1830-1920
