The Periflex is a 35mm camera manufactured by K.G. Corfield Ltd, England. It employs a 1/30 to 1/1000 sec. and B focal plane shutter and has the standard 39mm screw mount. It is a very basic camera. The body and removable back are metal castings, while the top and base plates are of stamped black anodised aluminium with delicate engravings. The shutter crate is a separate casting with a built-in rangefinder, arranged as an inverted periscope manually lowered into the light path behind the lens for focusing on a fraction of the image area. At the top-plate, four bright aluminium knobs make up the controls.