DEVICE FOR MEASURING DISPLACEMENTS Russian patent published in 1995 - IPC

FIELD: instrument engineering. SUBSTANCE: device comprises a sectional body accommodating a straight plumb bob, horizontal shift transmitters a vertical shift indicator comprising an Invar string, counting and contact units and a string tensioning mechanism. The body has a ball suspension and a calibrated horizontal shift limiter, both being secured coaxially on the upper flange and base of the body. The horizontal shift limiter has the form of a rod with a spherical head placed into a cylindrical sleeve with a provision for vertical movement. The contact unit is made as a rod passing through a guide bushing fastened to the body base with the upper end of the rod secured on a carriage installed in guides with a provision for vertical movement while its lower end has a support roller. The counting unit has the form of two measuring frames disposed in the working zone of a photodetector. EFFECT: improved design. 4 cl, 3 dwg