Wynne's Earliest Pattern of Exposure Meter
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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Wynne's earliest pattern of exposure meter, (simple actinometer (metal-cased dial) with separate wooden slide rule). Marked 'Wynne's Infallible Exposure Meter', instructions stamped onto side.
Details
- Category:
- Photographic Technology
- Object Number:
- 1927-939
- Measurements:
-
overall: 8 mm x 28 mm x 92 mm, .037 kg
- type:
- exposure meter and actinometer
- credit:
- Watkins, Alfred
