Milner extinction calculator

Milner extinction calculator, made by G. M. Milner, San Francisco. Extinction type meter, disc shaped. Reflected light seen through filter is compared with density of rotating step wedge. (M4463)

Details

Category:
Photographic Technology
Collection:
Kodak Collection
Object Number:
1990-5036/542
type:
extinction calculator
credit:
The Kodak Collection at the National Media Museum, Bradford