Hurter and Driffield actinograph

Hurter and Driffield actinograph, sold by Marion and CO. , London. Wooden slide-rule calculator; sliding card scale for time of month and day, N. lat 32 degrees 30'. Calibrated for H and D speeds, 0.5-300; lighting, f no. exp time.

Details

Category:
Photographic Technology
Collection:
Kodak Collection
Object Number:
1990-5036/576
Materials:
wood (unknown)
type:
actinograph
credit:
The Kodak Collection at the National Media Museum, Bradford