Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder
Campbell–Stokes sunshine recorder

Campbell–Stokes sunshine recorder

c. 1925 England

Offered by Hatchwell Antiques Ltd.

£1,800 gbp
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A Campbell–Stokes sunshine recorder by Casella of London.

The Campbell–Stokes recorder (sometimes called a Stokes sphere) is a kind of sunshine recorder. It was invented by John Francis Campbell in 1853 and modified in 1879 by Sir George Gabriel Stokes. The original design by Campbell consisted of a glass sphere set into a wooden bowl with the sun burning a trace on the bowl. Stokes's refinement was to make the housing out of metal and to have a card holder set behind the sphere.

The unit is designed to record the hours of bright sunshine which will burn a hole through the card.
Dimensions
Height 21.00 cm (8.27 inches)
Hatchwell Antiques Ltd.

Hatchwell Antiques Ltd.
533 Kings Road
London
SW10 0TZ

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