Probe, test device and test assembly for testing the surface of a drill hole

摘要

The probe has a length (L) and which can be rotated and a mirror (15) which is attached to the probe and from a surface (26) bore, the reflected light is arranged along an axis perpendicular to the first beam section which meets in the direction of the axial length on the course of a redirected second beam section. The mirrors form from free mirrors. An independent claim is included for a test device and test assembly.