Watkin standard meter
Watkins standard meter. Cylindrical form actinometer, end cap on chain forms 1 sec. period pendulum. Wooden paper holder at other end under mask with tint segment and blue glass. Three rotating calculator rings.
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/513
- Materials:
- brass, glass and paper (fibre product)
- Measurements:
-
overall: 50 mm 40 mm,
- type:
- actinometer
- credit:
- The Kodak Collection at the National Media Museum, Bradford
