Mercury in glass lactometer, in case
1830-1920
Hydrometer, mercury in glass lactometer, with case
1830-1920
Glass Baume hydrometer
Spirit bubbles
1860-1920
Glass hydrometer in case
Urinometer
Saccharometer, in case
Glass hydrometer in case
Hydrometer, glass and metal
1801-1900
Hydrometer saccharometer
1840-1930
Hydrometer, cased
Urinometer, mercury and glass
1830-1900
Urinometer, mercury in glass
1830-1900
Urinometer with test tube in cylindrical cardboard case
1830-1900
Glass urinometer for diabetes, in case, German
Hydrometer, glass, for diabetes
Urinometer in leatherette covered cylindrical case
1830-1920
Urinometer set
Hydrometer, glass, for diabetes, in leather case
Hydrometer, London, England, 1850-1920
1850-1920
Hydrometer, glass, very crude
1830-1900
Glass hydrometer in case by James Wooley
Hydrometer, glass and metal
1801-1900
Hydrometer, alcoholmeter, glass
Saccharometer in cardboard case
Glass hydrometer with mercury, in cardboard case
Hydrometer, broken, with leather case
1830-1920
Hydrometer, cased, by Brewer Freres
Glass hydrometer in cardboard case, German
Glass hydrometer with mercury
1859-1872
Sikes alcoholometer
Twaddle hydrometer
1850-1950
Glass lactometer, England, 1875-1900
1875-1900
Urinometer, mercury and glass
1830-1900
Urinometer with measuring cylinder in leather covered cylindrical case
1830-1900
Urinometer with measuring cylinder
1830-1900
Urinometer, mercury in glass
1830-1920
Urinometer, mercury in glass
1851-1920
Urinometer, glass and mercury
Urinometer, glass and mercury
1830-1920
Urinometer, mercury in glass
1850-1930
Urinometer, glass and mercury
1830-1870
Urinometer with measuring cylinder in leather covered cylindrical case
1830-1900
Hydrometer set
Glass hydrometer in wooden case
1871-1906
2 hydrometers in case
1880-1935
Hydrometer, with wooden case
1830-1930
Hydrometer, glass and metal, in cardboard case
Hydrometer made by Tissier, French, 1830-1920
1830-1920
