Johnson Exposure Calculator
- Made:
- 1955-1965 in United Kingdom
Circular magnification exposure calculator by Johnsons of Hendon.
Details
- Category:
- Photographic Technology
- Object Number:
- Y1988.146.26
- Materials:
- plastic (unidentified) and metal (unknown)
- Measurements:
-
overall: 7 mm 142 mm,
- type:
- photographic equipment
- credit:
- Gift of Alan Evans
