A camera which was also widely used during WW2, is the Zeiss Ikon Super Ikonta B 532/16 model.
The camera is a folding rangefinder camera (120 roll film, 6cmx6cm) with 80mm f2.8 Tessar lens; the shutter is a Compur Rapid 1 – 1/400 sec.
The metering system was selenium cell mounted on top middle of camera body, protected by a flip-up metal cap.
Full manual exposure. Measure EV values from light meter then transfer EVs to lens body using EV guide on camera top.
The Super Ikonta was standard British Army issue to the AFPU’s stills photographers.