This paper describes the design of an optoelectronic device for high-accuracy transfer of the direction of a vector from one plane to another, based on the autocollimation method, using a reflector in the form of a prism unit. The device makes it possible to determine the relative rotation angle of objects within the limits +/- 1.5 degrees to within 5 ''. When the device is used as a vertical channel of direction transfer, the limiting error of azimuth transfer is no more than 7 '' when the distance between the objects is 2.5-3.5 m. (C) 2009 Optical Society of America.
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