Improvements in or relating to control systems for photogrammetric posts
FR1237067A
Device for controlling the synchronous operation of photographic shutters, in particular measuring darkroom shutters similar to those of known cinematographic theodolites
FR1236891A
Device for measuring the flow of a gas in a pipe, with pressure and temperature correction
FR1236840A
Pressure control device, in particular pneumatic regulator
US3107270A
Telescope with circular interference grating reticle
US3055263A
Optical apparatus for determining the position of an object
US3046404A
Method of and means for comparison of two electrical potentials for purposes of photometry and the like
US3037418A
Electro-optical device
US3055260A
Photo-electric sight adjusting device
FR1207328A
Device for remote transmission, preferably wireless, of an angle, the position of a tree, or other similar magnitude
FR1207300A
Mechanism for controlling a recording device by a measuring instrument
DE1060624B
Device for registering forces, in particular extremely large and brief acceleration forces
DE1054570B
Self-balancing compensator
US3002417A
Automatic target finder and tracker for theodolites and the like
US2961917A
Means for examination of graduated circles
US3038152A
Scale reading apparatus
US2930895A
Scale interpolating device
GB836515A
Improvements in or relating to variable area suspension-body flowmeters
