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