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Spurge sensitometer

Warnerke Sensitometer

Sensitometer

Variable Aperture Sensitometer

1918
Electric motor-drive; metal sector disc approx 260mm diameter; flap shutter; no light source.

Disc sensitometer

Drum sensitometer

Drum sensitometer

Disc sensitometer

Disc Sensitometer

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.

Warnerke's Standard Sensitometer

High speed sensitometer, designed by R.J. Hercock, c. 1945

High Speed Sensitometer

1945
Disc sensitometer; electric driver sector wheel; no lamphouse; used in plate and film testing.

Disc sensitometer

Large sensitometer disc approx. 4" diameter; electric motor driven; in wooden housing. Lamphouse is 1990-5036/8611.

Sensitometer disc

Printing frame for 9x12 cm plate, containing continuous wedge with red, green, blue and yellow filter strips. In original carton with German instructions.

Herlango Eder-Hecht sensitometer

1922-1932
Opal glass screen, with plate with 24 graduated holes behind. 24 compartments; for 1/4 plates.

Spurge sensitometer

Box containing Chapman Jones plate tester in darkslides. Exposure board with candle holder (folding candle shade missing) and candles. Sanger Shepherd and Co.

The Chapman Jones Plate Tester