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'Calormeter' for motor vehicle radiator water temperature indicator

1920-1939

Temperature indicator

1900-1982

Electrical temperature indicator no C315931

Pye-Ether Digital Electronic Indicator

1970-1979

Fixed focus radiation pyrometer, temperature indicator, by Foster Instrument Co. Ltd., Letchworth, England, 1950. Temperature range 700-1400°C, temperature indicator in mahogany case with glass display cover.

Photo-Electric Radiation Pyrometer (Temperature Indicator), 1950

1950

Stereo-pyrometer (optical temperature indicator), made by W. & J. George Ltd., London & Birmingham, 1906-1925.

Stereo Pyrometer (Temperature Indicator),1906-1925

1906-1925

Temperature indicator, designed by Callendar and Griffiths, mounted on gimbals.

Temperature indicator

1900-1928

Two Bikini temperature indicators typ TiB2, S/N 357 + 744.

Bikini temperature indicators type TiB2

1960