Hurter and Driffield actinograph

Made:
1892 in Soho
maker:
Marion & Co.

Hurter and Driffield Actinograph Patent No. 5545 1888, with slide rule calculator with roller, seals for H & D speeds 300-0.5: light: very dull - very bright, aperture f/2.8-64, exposure time 0.05sec to 60 secs. Time of year and day on roller. Calibrated for North latitude 52 30 0 degrees. In wooden case. Marion & Co. 1892.

Details

Category:
Photographic Technology
Object Number:
1990-5036/1892
type:
actinometer
credit:
The Kodak Collection at the National Media Museum, Bradford
status:
Permanent collection

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