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Hot-wire voltmeter

1893

8" dial

Glass storage bottle

1907-1912

‘Clam-shell’ development model showing development of the PAW

1997-2002

DnaCapsule single-button scanning module with LED and camera

2021

Crompton voltmeter no.60802, c.1916, 0 - 300v.

Crompton sector voltmeter no.20684 - c.1908

circa 1908

Tripod

1907-1912

Burner nib

1907-1912

Pair of metal tongs

1907-1912

Miniature Electricity Meter

1931

White plastic block with metal circuit, printed by Adrian Bowyer's RepRap 3D printers, by Adrian Bowyer, Bath, c.2007-2012

White plastic block with metal circuit, printed by Adrian Bowyer's RepRap 3D printer

2007-2012

Ensignette No. 2 rollfilm camera, made by Houghtons Ltd. Collapsing metal camera, for 129 film: 1 5/8 x 3". Achromat lens, f/11, 16, 22 apertures in metal plate. T/I shutter. Brilliant reflecting finder. Pat. No. 28464, 1907. (M2697). No. 14251

Ensignette No 2 Rollfilm Camera

1911-1926

Premo film pack tank. 7"x4 1/2" diameter metal tank with cylindrical holder with 12 compartments for cut films.

Premo film pack developing tank

Old patter key (Pat. 3703) with open ended spanners: 1 1/8" and 1" square sockets: 3/16, 1/4 and 5/16"

Oxygen cylinder key

Oxygen cylinder and wing nut

Oxygen cylinder and wing nut

Optimus exposure indicator made by Perken, Son and Rayment, London. Designed by Howard Farmer. Celluloid slide-rule calculator. Calibrated: subject; f no. time. Factors given for time of year and day. Metal slider.

Optimus exposure indicator made by Perken

Cine Kodak exposure scale made by Eastman Kodak. Metal slide-rule calculator for Cine-Kodak films. Scales for: film and filter; light shutter; fps; aperture. (M807)

Cine Kodak exposure scale

1933