Warnerke's standard sensitometer

maker:
Leon Warnerke

Darkslide containing step wedge with 21 steps. Phosphorescent plate made luminous by burning magnesium and placed in holder. Plated exposed through wedge under luminous plate for 30 seconds. No.79. L.Warnerke.

Details

Category:
Photographic Technology
Object Number:
1990-5036/3184
Materials:
glass, wood (unidentified)
type:
sensitometer
credit:
The Kodak Collection at the National Media Museum, Bradford
status:
Permanent collection

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