ADJUSTING INSTRUMENT, IN PARTICULAR FOR ADJUSTING AN EXTERIOR VISION UNIT OF A VEHICLE

Adjusting instrument for an exterior vision unit for a vehicle, comprising a base, a foot and a pivoting shaft extending therefrom along a longitudinal axis, and a housing surrounding the pivoting shaft and pivotable around the longitudinal axis in an adjustment range, between at least a park position and a work position. The base and the housing cooperate via cams which interlock in the work position so that the housing is in a stable axial ground position with respect to the foot. The cams, upon pivoting of the housing relative to the base, move apart from the work position along the longitudinal axis, and upon further pivoting are supported on each other, so that the housing is in an axially further removed position with respect to the foot. The adjusting instrument is provided with a detector configured to verify that the housing is in the stable axial ground position.