Practos extinction calculator
- Made:
- circa 1930
- maker:
- Schneider and Hurter and Driffield
Practos extinction calculator for use with Cine cameras marked Scheiner and H. & D. c.1930
Details
- Category:
- Photographic Technology
- Collection:
- Arthur Frank Collection
- Object Number:
- 1979-559/2027
- type:
- extinction calculator
- credit:
- The Arthur Frank Collection
