Watkins actinometer

Made:
Hereford
maker:
Watkins Meter Company

Watkins actinometer, watch-form. Sensitive paper under blue glass and mask with standard tint. Fixed calculator engraved on back plate.

Details

Category:
Photographic Technology
Object Number:
1990-5036/518
type:
actinometer
credit:
The Kodak Collection at the National Media Museum, Bradford
status:
Permanent collection

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