Watkins Junior exposure meter
Watkins Junior exposure meter. Cylindrical form actinometer, wooden paper holder under mask and blue glass, two rotating calculator rings, 1893.
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/514
- Materials:
- brass (copper, zinc alloy), glass and paper (fibre product)
- Measurements:
-
overall: 45 mm 30 mm,
- type:
- actinometer
- credit:
- The Kodak Collection at the National Media Museum, Bradford
