Leon Warnerke's patent actinometer

Leon Warnerke's patent actinometer, photographic exposure meter

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Leon Warnerke's patent actinometer, photographic exposure meter
Science Museum Group
© The Board of Trustees of the Science Museum

Leon Warnerke's patent actinometer, photographic exposure meter, late 19th/early 20th century; works by using fluorescence

Details

Category:
Photography
Object Number:
1921-97
Materials:
metal, brass (copper, zinc alloy), glass and plastic (unidentified)
Measurements:
overall: 85 mm x 90 mm x 55 mm, , .41kg
type:
exposure meter and actinometer
credit:
Abney, Lady