Drehknebel zur Betätigung des Stelltriebes eines Potentiometers

摘要

The invention relates to a turning knob for actuating the adjusting member of a potentiometer or the like, comprising at least one illuminating means that emerges from a visible surface of said knob at a radial distance from the axis of rotation of said knob. The illuminating means consist of a light exit surface pertaining to an optical fibre and light from the light admitting surface of a light source that is basically arranged on the axis of rotation of the turning knob.