Watkins factorial calculator
- PART OF:
- The Kodak Museum Collection
- maker:
- Alfred Watkins
Watkins Factorial calculator. Development calculator - two concentric discs bearing scales 1-50 (factors) 1 1/4-50secs. - time of appearance of image. Aluminium; [with joint instruction book for darkroom clock and calculator].
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/78
- Materials:
- aluminium (metal)
- type:
- factorial calculator
- credit:
- The Kodak Collection at the National Media Museum, Bradford
