Wheatstone's Helio-chronometer, 1876-1899

Made:: 1876-1899 in London

maker:: CHARLES WHEATSTONE and Elliott Brothers

Wheatstone's Helio-chronometer, in case, Elliott Brothers, London, England, 1876-1899

Details

Category:: Time Measurement

Object Number:: 1921-816

type:: equinoctial sundial

credit:: Thomas H. Court

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Wheatstone's Helio-Chronometer, 1876-1899

Sir Charles Wheatstone's Helio-chronometer, Elliott Brothers, London, England, 1876-1899. The time is given by hour and minute hands when an image of the sun falls on a system of concentric circles.