Abstract: An archery sighting device which provides adjustment of the angle between an optical sight and an archery bow by sliding movement of a housing for the optical sight along a curved support member. A mounting bracket of the device is affixed to a side surface of the midsection of an archery bow. The curved support member providing angular adjustment of the optical sight has a radius of curvature proportional to the draw length of the archer, thus affording precise adjustment of the angle of the optical sight. A detent positioning arrangement is provided to enable the user to readily adjust the optical sight to the desired setting along the curved support member.