1943 -Em 1m R 36 B - Artillery German Rangefinder

1942 -Em 1m R 36 B - German Artillery Rangefinder This model was one of the most widely used optical rangefinders in the German Wehrmacht during WWII. Entfernungsmesser 1-meter Raumbild 36 (1936) or "Em 1m R36" rangefinder. In the words of one German source, "A light rangefinder for all branches of the service, especially suitable for moving targets on the ground and in the air". A stereoscopic rangefinder or stereoscopic telemeter is an optical device that measures distance from the observer to a target, using the observer's capability of binocular vision. A stereoscopic rangefinder uses two eyepieces and relies on the operator's visual cortex to merge the two images into a single picture. A reference mark is separately inserted into each eyepiece. The operator first adjusts the direction of the range finder so that the fixed mark is centered on the target, and then the prisms are rotated until the mark appears to overlap in the operator's combined view. The range to the target is proportional to the degree of rotation of the prisms. This 1943 dated rangefinder was manufacturer by Saalfelder Apparatebau GmbH (code fwq)