GONIOMETER Russian patent published in 1995 - IPC

FIELD: optical instrumentation engineering. SUBSTANCE: this goniometer makes it possible to provide for identical stabilization of sighting line and sighting proper while performing measurements in agreement with. Abbe and Fraunhofer methods. System 6 changes discretely separately or simultaneously focal distance of objective 1 of telescope and magnification of microscope sending image of lines of dial 4 in field of vision of eye-piece of telescope. With observation of autocollimation grid relation f′=0,5 R·V is realized, where f′ is focal distance of objective of telescope; R is radius of pitch circle of dial; V is magnification of microscope. Relation f′=Rγ. is realized while observing collimator grid. EFFECT: enhanced operational reliability. 1 dwg