In a vehicle door mirror device, when a fitting recess portion and a fitting protrusion portion fit, a gap is formed between an orthogonal face and an opposing face due to a fitting recess portion and a fitting protrusion portion contacting along case rotating direction. Accordingly, even when the fitting protrusion portion wears and external shape becomes smaller, the fitting recess portion and the fitting protrusion portion are contacted and fitted until the gap disappears. The gap is set larger than a gap between a visor and a stay. Therefore, the fitting recess portion and the fitting protrusion portion contact along the case rotating direction even when the visor contacts the stay, due to presence of the gap. Accordingly, even when the visor contacting the stay is taken as useful life indicator of the device, rattling of the visor against the stay can be suppressed at this stage.