Glass hydrometer in case
Hydrometer, cased
Hydrometer, mercury in glass lactometer, with case
1830-1920
Saccharometer in cardboard case
Glass hydrometer in case by James Wooley
Hydrometer, with wooden case
1830-1930
Hydrometer, broken, with leather case
1830-1920
Glass hydrometer with mercury
1859-1872
Sikes alcoholometer
Hydrometer, lead shot in glass
1861-1920
Glass lactometer, England, 1875-1900
1875-1900
Hydrometer, cased, by Kemp and Co. of Edinburgh
Hydrometer and metal case, French(?), 1830-1920
1830-1920