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Hand-Held Electronic Digital Thermometer, 1994

Hand-Held Electronic Digital Thermometer, 1994

1994
Digital Temperature Controller, 1977

Digital Temperature Controller, 1977

1977
Hand-Held Digital Thermometer, 1975

Hand-Held Digital Thermometer, 1975

1975
Radiation Pyrometer (Temperature Indicator), 1918-1945

Radiation Pyrometer (Temperature Indicator), 1918-1945

1918-1945
Power Supply for 'Digitherm' Electronic Thermometer, 1975

Power Supply for 'Digitherm' Electronic Thermometer, 1975

1975
Electronic digital panel mounting thermometer type 9501 by Comark Ltd., with additional bar graph display and alarm outputs, with external type K thermocouple probe, made in 1994

Precision Digital Thermometer, 1994

1994
'Infratrace' infrared non-contact electronic digital thermometer type KM800S by Comark Ltd, Welwyn Garden City, Hertfordshire, 1994, with low-voltage power supply unit.

Infrared Non-Contact Electronic Thermometer, 1994

1994
Experimental photo-electric radiation pyrometer, temperature indicator. Designed by T. C. Keeley at the Clarendon Laboratory, Oxford, England, 1920-33.

Photo-Electric Radiation Pyrometer (Temperature Indicator), 1920-33

1920-1933
Electric pyrometer voltameter, with Leclanche battery, probe fitted with glass tip, separate iron tip, and glass sheath all by Siemens Brothers & Co. Limited , London, England, 1871-1885.

Siemens' Electrical Pyrometer, 1871-1885

1871-1885
Radiation pyrometer (infra-red thermometer) and associated electronic signal processing unit and display unit, by Land Pyrometers, Sheffield, Yorkshire, 1975-78. Contains arsenic trisulphide lens and platinum: rhodium-platinum thermopile.

Radiation Pyrometer (Temperature Indicator), 1975-78

1975-1978