A rear view mirror for a motor vehicle comprising a case containing a mounting platform which has a concave part-spherical recess. A reflective member is secured to a mirror carrier which has a hollow projection with a part-spherical outer surface dimensioned to be a sliding fit in the recess a part-spherical inner surface and a diametrically oriented slot. A stem is secured to the mounting platform so as to project from the center of the recess and has a T-shaped crosshead dimensioned to pass through the slot when aligned therewith and to engage with the part-spherical inner surface of the hollow projection when aligned transversely to the slot. A lever on the mounting platform engages with a slot in the mirror carrier to prevent relative angular movement between the mirror carrier and the mounting platform about said stem.