Illustration of a man operating an optical pyrometer from the Cambridge Scientific Instrument Co.
4 0 c m
 
30cm
actual image size: 22cm x 32cm

Illustration of a man operating an optical pyrometer from the Cambridge Scientific Instrument Co.

© Science Museum / Science & Society Picture Library

Description

An optical pyrometer is an instrument which measures the temperatures of furnaces by estimating the colour of the radiation, or by matching it with that of a glowing filament. This pyrometer is used to measure temperatures between 500 and 4000 degrees C.
 

Image Ref.

10328407
 

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