Differential Air Thermometer, 1894

Differential Air Thermometer, 1894

Differential air thermometer with stop-cock, by J. J. Griffin & Sons, London, England, 1894.

Industrial thermometers hi-res stock photography and images - Alamy

A brief history of the thermal properties metrology - ScienceDirect

Some like it hot: factors impacting thermal preferences of two

The standardisation of light and photometry – A historical review

Thermometer - Wikipedia

ADT 200 Differential Thermometer - Crowcon Detection Instruments Ltd

The history of measuring temperature – History of Science

Some history and an evaluation of biological drosometry

Spot tests: past and present

Applied Sciences, Free Full-Text

Diagnostic Products

Antique Leslie's differential thermometer, Italy, late 1800's

Measurement of variations of temperature and vapour pressure