Abstract: A vehicle door mirror device has a detent plate which is provided in the bottom of a housing having a motor actuator therein and a detent piece which is arranged at a stand or a stay. Depressions are formed in the detent plate, protrusions are formed on the detent piece, and a stopper is provided on the stand. A restricting wall is provided at the bottom portion of the housing. The range of the turning angle of the housing is set from the state where the stopper is in contact with the restricting wall to where the protrusion on the detent piece comes into contact with the depression on the detent plate. The same detent piece can be used while changing the rotation angle of the housing by changing the position of the detent piece relative to the stand, whereby the types of parts used can be reduced.