Lactometer, glass, in cardboard container, British, first half 20th century Lactometer, glass, in cardboard container 1901-1950
Lactometer, British Standard 734. Range 1.025 to 1.035 g/ml. G.H. Zeal Ltd., London, 1984. Lactometer, British Standard 734. Range 1.025 to 1.035 g/ml. G.H. Zeal Ltd.
Glass lactometer by unknown maker. 133mm long. Range W-1-2-3-M-C, equally divided. Mercury weight and paper scale. In black cardboard tube, 1900 - 1960. Glass lactometer by unknown maker 1900-1960
Hydrometer, mercury in glass lactometer, with case, English(?), 1830-1920 Hydrometer, mercury in glass lactometer 1801-1830
Lactometer, mercury in glass, with separate paper scale, probably English, 1830-1920 Lactometer, mercury in glass 1830-1920
Glass lactometer with integral thermometer with case; scale inscribed 15-45, correct at 600F, no.251 and made in Germany. Hydrometer Index 361. Glass lactometer with integral thermometer with case; scale inscribed 15-45 late 19th century