Sunshine recorder Mk IIIA by Casella

Made:
1959 in London
maker:
C F Casella and Company Limited
Sunshine recorder Mk IIIA by Casella

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Sunshine recorder Mk IIIA by Casella
Science Museum Group
© The Board of Trustees of the Science Museum

Sunshine recorder Mk IIIA, Campbell-Stokes type, by Casella, MO serial no.479/59

This device records the duration of visible sunshine by harnessing the energy of the sun's rays within the optial glass, in order to burn a line onto a recording card. Each card is marked with hourly intervals and can record up to a day of sunshine. It is the 'Tropical' version, meant for latitude 0 to 45 degrees North or South.

The recorder was invented by John Francis Campbell in 1853 and modified in 1879 by Sir George Gabriel Stokes, leading to the design name 'Campbell-Stokes. This particular design is manufactured to the specifications of the British Meteorological Office.

Details

Category:
Meteorology
Object Number:
1995-820
Materials:
brass, card and glass
type:
burning-glass sunshine recorder
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • sunshine recorder
credit:
Meteorological Office, Berkshire