An auxiliary optical device, for photogrammetric instruments with binocular stereoscopic viewer, to be used for the stereoscopic identification of the points marked on a picture
DE1136857B
Alignment device for the rollers of counters
GB908934A
Adjustable corrector for movements actuated by a nut and screw system
US2952186A
Enlargement changer for binocular viewing systems
DE1204840B
Triangulating stereo comparator with two image carriers used to produce an aerial photograph chain
GB856049A
Improvements relating to the control of moving points
GB739970A
Device for illuminating a movable mark in photogrammetric plotting systems
