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Steel Specimens showing Colours for Tempering, 1801-1900

1800-1824

Pivoted Coil Electrical Temperature Indicator, 1920-22

1920-1922

Fire Clay Temperature Indicator Cone in Stand, 1925-31

1925-1931

Register Pyrometer with Case, 1830-1840

1830-1840

Disappearing filament pyrometer by the Cambridge Instrument Co. Ltd. England

1948-1953

Thermo-Electric Thermocouple (Electrical Temperature Sensor), 1920-22

1920-1922

Ceramic Temperature Indicator Cones and Stand, 1925-1931

1925-1931

Brass optical pyrometer from St.Georges Hospital

1890-1930

Type E70 pyrometer

1950-1979

Pyrometer tube, 22" long

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Wedge Optical Pyrometer

1900-1920

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Whipple Temperature Indicator, 1912-14

1912-1914

Byström's Water Pyrometer, 1862-1884

1862-1884

Copy of Hindley's pyrometer

1700-1799

Pyrokolor optical pyrometer in cardboard case

1925-1974

Pyrometer for checking temperature of type metal

Callendar Electrical Temperature Indicator, 1894

1894

'Resilia' Electrical Temperature (Pyrometer) Indicator, 1924

1924

Fire Clay Cone Temperature Indicator, 1928-1931

1928-1931

Pivoted Electrical Temperature Indicator, 1925-29

1925-1929

Fery radiation pyrometer outfit

1900-1982

Pyrometer by Gallonde

Turbine blade pyrometer with sapphire lens

1900-1982

Pyrometer tube, (silicon carbide)

Petrie Indicator Pyrometer, 1862

Register pyrometer to John Frederic Daniell's 1830 design

1830

Pyrometer tube, 12" long

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931
Stereo-pyrometer (optical temperature indicator), made by W. & J. George Ltd., London & Birmingham, 1906-1925.

Stereo Pyrometer (Temperature Indicator),1906-1925

1906-1925
Cambridge optical pyrometer (polarizing type) No. 14188, with amyl acetate lamp for standardising, in mahogany box, by The Cambridge Scientific Instrument Co. Ltd., England. Another mahogany box containing galvanometer No. 69140 and a variable slide resistance(5.9 ms)

Cambridge optical pyrometer (polarizing type) with amyl acetate lamp,in box. Also a boxed galvanometer and a variable slide resistance

Pyrometer in fitted cylindrical case, by Keiser & Schmidt, Charlottenburg, Berlin in Germany, 20th century.

Pyrometer in fitted cylindrical case

1901-1958
Platinum rhodium thermocouple with one fireclay sheath, by Cambridge Instrument Company Limited, London, England, 1925-29.

Platinum Rhodium Thermocouple, 1925-29

1925-1929
Iron eureka thermocouple, temperature sensor, by Robert W. Paul, London, England, 1910-12.

Iron-Eureka Thermocouple, Temperature Sensor, 1910-1912

1910-1912
Fery absorption pyrometer, inscribed "Pyrometre Optique de M. Fery No. 59"; temperature range 800 deg C to 5800 deg C (mirror is missing)

Fery absorption pyrometer

1900-1982
Unipivot pattern electrical temperature (pyrometer) indicator by Robert W. Paul, London, 1910-12. Range 0-900°C. Serial No. 0568.

Electrical Temperature Indicator, 1910-1912

1910-1912
Pivoted coil electrical temperature indicator with wall bracket, by The Cambridge Scientific Instrument Company Limited, London and Cambridge, England, 1910-1914. Temperature range 0-1000°C, Serial No. 18603 (see note).

Pivoted Coil Electrical Temperature Indicator, 1910-14

1910-1914
Platinum electrical resistance thermometer (pyrometer), laboratory pattern, with porcelain tube and fitted with glass tube, by The Cambridge Scientific Instrument Company Limited, Cambridge, England, 1910-14.

Platinum Electrical Resistance Thermometer, 1910-14

1910-1914
Wedgwood pyrometer with wooden case, by J.F. Newman, 122 Regent Street, London, 1827-1856.

Wedgwood pyrometer with wooden case

1827-1856
Pyrometer, made by Cochrane, A O in England, United Kingdom, 1913

Pyrometer, made by Cochrane

1913
Thermo-electric Pyrometer, with enclosed terminals, c. 1922

Thermo-electric Pyrometer

Gas filled pyrometer standard No. 285, calibrated at the National Physical Laboratory (a specially designed lamp with a metal filament, in a wooden case, probable date 1951.

Gas filled pyrometer standard No. 285

circa 1951
Portable thermistor pyrometer indicator (serial No. 92757 P1) in wooden case, by Salford Electrical Instruments Ltd., Salford, Greater Manchester, c.1952. Complete with thermistor and connecting leads. Range 0 to 150°c.

Portable thermistor pyrometer indicator (serial No. 92757 P1) in wooden case

1950-1952