Watkins' Calculating Shutter
- maker:
- Alfred Watkins and
- Bausch and Lomb Inc
Watkins' calculating shutter, fitted to Bausch & Lomb Optical Co. shutter).
Details
- Category:
- Photographic Technology
- Object Number:
- 1927-961
- Materials:
- metal, copper alloy and steel
- Measurements:
-
overall: 22 mm 85 mm, .193 kg
- type:
- shutter
- credit:
- Watkins, Alfred
