Watkins Exposure Meter
Watkins exposure meter, made by R. Field and Co. Birmingham. Cylindrical form; pendulum cap. Actinometer from carrying long strip of sensitive paper under tinted disc. Calculator on body - 6 scales, 4 rotating, two fixed.
- Measurements:
-
overall: 62 mm 35 mm,
- Materials:
- glass and brass (copper, zinc alloy)
- Object Number:
- 1990-5036/325/1
- type:
- exposure meter