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Minimum centigrade thermometer

1961

Standard Rutherford minimum thermometer

1790 (designed)

Grass minimum thermometer by Calderara, 1928.

1928

Casella Type Minimum Mercury Thermometer, 1871

1871

Minimum thermometer by Negretti and Zambra

1862

Negretti and Zambra mercurial minimum thermometer by Negretti and Zambra, 1855. Thermometer broken.

Negretti and Zambra mercurial minimum thermometer by Negretti and Zambra

1855

Minimum thermometer, sheathed, spirit in glass, Mk 2C, Met 21201, MO 35514/61, NPL61, by Short & Mason Ltd.,1961

Minimum thermometer

1961

Sheathed Minimum thermometer, with box by Negretti & Zambra, London, England, 1931

Minimum thermometer with box, British, 1931

1931

Minimum thermometer with bifurcated bulb, on ebonite, by Louis Casella, c. 1873.

Minimum thermometer with bifurcated bulb

1873