Disc Sensitometer
Spurge sensitometer
Sensitometer
Disc sensitometer
Sensitometer disc
Herlango Eder-Hecht sensitometer
1922-1932
Spurge sensitometer
Warnerke's Standard Sensitometer
High Speed Sensitometer
1945
Warnerke Sensitometer
Drum sensitometer
The Chapman Jones Plate Tester
Variable Aperture Sensitometer
1918