HOSE FOR PERISTALSIS MOTION PUMP

摘要

A deflection unit on a path parallel to a light beam has a rider, which grips the track of a measuring guide (not shown) and permits a beam component to pass while deflecting a component. A levelling means is provided on a line bisecting the angle between the incoming and the deflected beams in or parallel to their common plane to facilitate remote positional measurements of reference points on a body in order to make measurements more accurate.