The Campbell Stokes Sunshine Recorder is manufactured to a design based on British Meteorological Office (BMO) specifications. The sphere is made from well-annealed optical glass and the sunshine hours are recorded onto a card, which is inserted into the base of the unit. Each card is marked with hourly intervals and an optional transparent plastic template is also available to help measure the curved trace more accurately.

The instrument is fully adjustable for operation at different geographical latitudes and levelling screws on the base ease installation.

• Adjustment for latitude: 0 to 65° N or S after selecting correct model
• Sphere: 101.6mm dia (±1.3mm)
• Focal length for Sodium D light: 74.9mm ±0.25mm
• Dimensions: 240 x 187 x 165mm
• Weight: 4.3kg

Two versions of the sunshine recorder are available, depending upon latitude.
MT075 Temperate for latitude 45 to 65° N or S
MT076 Tropical for latitude 0 to 45° N or S

Cards are purchased separately. See MT075/1 and MT076/1.

 Click to view a PDF file of the User Guide