Contour measuring instrument

摘要: An instrument for measuring the shape of outer surface, i.e., contour a workpiece. In this instrument, tip stylus fixed on one end rotatable arm is brought into contact with surface workpiece, in condition moved axial direction thereof, and vertical movement tracing irregularities workpiece detected by differential transformer so as to measure there are provided driving mechanism forcing turn predetermined an turning angle detecting beyond stop operation, whereby detection set at angle, that can be inserted object measured, being cylindrical shape, or hole like object.