1282 Campbell Stokes sunshine recorder

The Campbell Stokes sunshine recorder is manufactured to the British Meteorological Office's specification. The sphere is made from well-annealed optical glass and the hours the sun shines are recorded onto a card inserted into the base of the recorder. The cards are marked with hourly intervals. Two models are available: the choice depends on the latitude at which the recorder is to be used. Record cards are included for the first year.
For temperate latitudes 45° to 65° N or S. For tropical latitudes see model 1281.