En av många stereokameror från 50-talet.

Three Dimension Company hörde till Bell & Howell.

Lite data:

Camera Type: 35 mm viewfinder stereo camera
Manufacturer: Three Dimension Co., Chicago, IL, USA (A Division of Bell & Howell)
Year Introduced: about 1954
Film: 135 cartridge
Size: 163 x 83 x 59 mm (W x H x D)
Weight: 747 grams
Lens Separation: 65.15 mm
Image Format: 23.82 x 25.00 mm (W x H), notch on the right
Image Window Separation: 66.42 mm
Lenses: Tridar Anastigmat (glass, matched), 1:3.5/35 mm, filter thread 26 mm
Diaphragms: Iris diaphragms between the lenses, continuously adjustable f/3.5 to f/16
Focusing: manual, 4 ft. - infinity. Movement of the film level. (focusing wheel marked from 2 ¾ ft. - infinity)
Shutter: mechanical guillotine type shutter behind the lenses. Cocked with film transport.
Shutter Speeds: continuously adjustable from 1/100 to 1/10 sec. and "B"
Viewfinder: Newton viewfinder (approx. 0,5x). Spirit level reflected into viewfinder
Rangefinder: Split-image rangefinder (linked with focus), base length 60.5 mm
Film Loading: manual
Film Transport: manual, with wind knob by 10 sprocket holes (= 47.5 mm), sprocket wheel on top and bottom
Film Rewinding: manual. Unlocking by lifting wind button
Frame Counter: subtractive, 29 to 1. Manual reset.
Flash Contact: special flash contact
Tripod Socket: ¼" / 20 TPI
Selftimer: none
Special Features: Double exposure prevention. Lugs for carrying-strap
Accessories: Operating instructions, everready case
Notes: The film travels in a loop in order to achieve a smaller inter-ocular distance.
Shutter Speed and Diaphragm Settings are linked with an "ExpoSure" exposure calculator.