Bryhni Pupillo-fotometer
Brynhni Pupillo-fotometer. Exposure meter depending on size of pupil of dilated eye. Bookform with instructions and exposure tables. Sliding strip affects separation of two holes in eyepiece. Adjusted until the two holes appear to touch. Manufactured by Thoralf Dahl, Trondhjem. (M4462)
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/549
- Materials:
- paper (fibre product), metal (unknown) and cardboard
- Measurements:
-
overall: 110 mm x 70 mm x 5 mm,
- type:
- exposure meter
- credit:
- The Kodak Collection at the National Media Museum, Bradford
