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Lactometer.

Glass lactometer

1850-1920

Glass Gerber hydrometer

1900-1960

Lactometer, in case, by Chevallier, French

11 c.c syringe for milk testing apparatus

Lactometer in a blue leatherette cardboard tube case for milk testing apparatus

Mercury in glass lactometer, in case

1830-1920

Hydrometer, mercury in glass lactometer, with case

1830-1920

Lactometer or Milk Tester (dated 1869) by MOTTASHEAD & CO

1869

Glass lactometer

Glass lactometer, England, 1875-1900

1875-1900

Lactometer, in case, French (Crellin 106)

Galactometer with case

Flask for milk testing apparatus

Thermometer for milk testing apparatus

Four butyrometers in wood stand for milk testing apparatus

Quevenne type special lactometer

Lactometer, commercial grade graduated in specific gravity and equivalent milk scale

Lactometer, glass, in cardboard slipcase, c. 1900.

1900

Glass lactometer in case

Lactometer, glass, in cardboard container

1901-1930

Glass lactometer

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
Glass lactometer with paper scale, 9 1/4" long, range 0-60.

Glass lactometer with paper scale

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.

One of two tilt measures, 1ml, from a collection of apparatus for testing milk. Manufactured by Frank Bryan & Paton Limited, London.

1ml tilt measure for milk testing apparatus

4-bottle water bath and three-leg stand, from a collection of apparatus for testing milk. Manufactured by Frank Bryan & Paton Limited, London.

4-bottle water bath for milk testing apparatus

4-bottle machine and handle, from a collection of apparatus for testing milk

4-bottle machine and handle for milk testing apparatus

Lactometer, glass, in cardboard container, British, first half 20th century

Lactometer, glass, in cardboard container

1901-1950
Lactometer, made by Dairy Supply Co., c1910-50.

Lactometer, made by Dairy Supply Co

1910-1950
Lactometer, mercury in glass, with separate paper scale, probably English, 1830-1920

Lactometer, mercury in glass

1830-1920
One of two tilt measures, 10ml, from a collection of apparatus for testing milk. Manufactured by Frank Bryan & Paton Limited, London.

10ml tilt measure for milk testing apparatus

Slide rule, from a collection of apparatus for testing milk

Slide rule for milk testing apparatus

Hydrometer, mercury in glass lactometer, with case, English(?), 1830-1920

Hydrometer, mercury in glass lactometer

1801-1830
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