Bryhni Pupillo-fotometer

Made:
Trondheim
maker:
Thoralf Dahl

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
Object Number:
1990-5036/549
Materials:
cardboard, metal (unknown), paper (fibre product)
type:
exposure meter
taxonomy:
  • measuring device
  • light measuring device
credit:
The Kodak Collection at the National Media Museum, Bradford
status:
Permanent collection

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