Darton Brass Thermograph



A thermograph by F. Darton of St John St London C. 1900 in good working orde4r.

This lovely item, besides being a precise scientific instrument, is a work of art itself.  The case is made from copper with brass fittings, and sits on a cast iron base. This mechanical device is designed to record temperature over a seven-day period.

It consists of a wind-up mechanical rotating drum holding a temperature chart, plus a bi-metal mechanism sensitive to temperature change. A stainless steel arm with an ink nib records the fluctuating temperature readings on the rotating chart. The clockwork mechanism has just undergone a full service, in December 2021.

Thanks to Science Museum Group for this entry:-

“Thermograph with glazed copper cover and spring dampened base by F. Darton & Co., London, England, 1900-1910. Later used to make ambient temperature measurements next to the British Experimental Pile 0 (BEPO) reactor at the Atomic Energy Research Establishment, Harwell Oxfordshire in the 1950s”

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Contact:           Mick Binns

Tel:                  +44 (0)790 980 3624
Email:             m131nns@gmail.com

Website:          http://www.mementomoriantiques.com

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