Heyde's Aktinometer. Extinction meter for use on camera ground glass screen
Heyde's Aktinometer. Extinction meter for use on camera ground glass screen. Manufactured by A. E. Staley and Co, London EC.
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/4988
- Materials:
- metal (unknown), plastic (unidentified) and glass
- Measurements:
-
overall: 35 mm 75 mm,
- type:
- extinction calculator
- credit:
- The Kodak Collection at the National Media Museum, Bradford
