Practos exposure meter
Telescope type extinction meter. Blue tinted field and circular continuous wedge with shutter speeds visible in eyepiece. Depth of focus table. In leatehr case.
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/6717
- type:
- extinction meter
- credit:
- The Kodak Collection at the National Media Museum, Bradford
