Watkins' Temperature Coefficient Calculator
- maker:
- Alfred Watkins
Watkins' temperature coefficient calculator.
Details
- Category:
- Photographic Technology
- Object Number:
- 1927-963
- Measurements:
-
overall: 335 mm x 217 mm x 3 mm, .537 kg
- type:
- calculators
- credit:
- Watkins, Alfred
