Abstract: An apparatus for determining the angle between two adjacent objects such as the corner of a wall or the pitch of a roof, and the appropriate angle of a corresponding miter cut. The apparatus includes a base member that is configured in a substantially planar manner. The base member includes a channel for slidably receiving the ends of two support members. The support members are pivotally mounted to opposing angle arms that extend laterally in opposing directions from the base member and function to movably connect the angle arms to the base member and form a pointer thereon. The base member further includes numeric indicia that indicate the angle of the angle arms and the corresponding miter angle cut adjacent to the channel on the base member.