Hurter and Driffield Photometer

Hurter and Driffield photometer made by J Willis Grundy. For comparison of light sources, standard of unknown. Fitted with Lummer-Brodhun head on rack mounted carriage; moving on calibrated scale; standard lamp aperture fitted with rotating disc with 4 apertures.

Details

Category:
Photographic Technology
Collection:
Kodak Collection
Object Number:
1990-5036/7976
type:
photometer
credit:
The Kodak Collection at the National Media Museum, Bradford