An early version of a spectrometer used to calculate the concentration of chemicals by the amountof absorption of light at certain wavelengths.

Item is a simple, grey Bakelite camera for 6 x 6 cm (2.36" x 2.36") exposures on 620 film. The design includes a fixed focus, single aperture and one shutter speed. There are connection points for a flash unit, and a dimpled metal plate on the front, perhaps intended to mimic the apperance of a selenium light meter.

Item is a simple, red, Bakelite camera for 6 x 6 cm (2.36" x 2.36") exposures on 620 film. The design includes a fixed focus, single aperture and one shutter speed. There are connection points for a flash unit, and a dimpled metal plate on the front, perhaps intended to mimic the apperance of a selenium light meter.

Item is a manual plate changing box-style camera. It holds 12 steel plateholders inside the top door compartment behind the plane of focus. Holders have to be manually inserted into a slot. The camera has an achromatic lens with three diaphragm stops, two viewfinders, an aperture scale from f16 to 45, and a time and instantaneous shutter.

Item consists of a Bell & Howell Filmo Auto Load 16mm motion picture magazine camera.

Item consists of a Bell & Howell 240 motion picture camera. It is in a hard leather case also containing the manual and the case key. The camera uses 16mm film, has automatic exposure control, a 20mm lens, a self threading mechanism, has 32-fott film run and rapid winding crank, a reserve power indicator, and accepts a cable release.

Item consists of a brick-shaped brown plastic camera. It creates 40 24 x 32 mm exposures on 35 mm film in special cassttes. The camera uses a Graf Anastigmat f7/7/40 mm lens with a single-speed shutter that trips by counterclockwise motion on the winding crank.

Item is a black bakelite minicam for 3 x 4 cm. on 127 film.

Item consists of a Bell & Howell Two Fifty Two motion picture camera. It takes 8mm film, and has a Bell & Howell Super-Comat 10mm f/2.3 lens. There is a dial on the front of the camera to select aperture, light settings, and black & white or colour. It has a two-toned brown body and a winding knob on the side.