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8" dial

Hot-wire voltmeter

1893

Glass storage bottle

1907-1912

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

1997-2002

Crompton sector voltmeter no.20684 - c.1908

circa 1908

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

DnaCapsule single-button scanning module with LED and camera

2021

Miniature Electricity Meter

1931

Tripod

1907-1912

Pair of metal tongs

1907-1912

Burner nib

1907-1912

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

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

Oxygen cylinder and wing nut

Oxygen cylinder and wing nut

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

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