Abstract: An ovality gauge includes an elongated frame member carrying a roller support arm having a pair of rollers rotatably mounted to the roller support arm and spaced apart from each other. Preferably the rollers are adjustable to various positions. The ovality gauge also includes a moveable contact spaced from the pair of rollers, with the moveable contact and rollers in a plane parallel to the elongated frame member. The moveable contact is connected to an indicator means whereby movement of the moveable contact with respect to the pair of rollers is detected and indicates deviations of a cylindrical member contacting the gauge from perfect roundness.

Abstract: A pitch diameter gauge is disclosed which includes a gauge body and a first arm attached to the body and extending perpendicular outward therefrom. A second arm is attached to the body and extends perpendicular outward therefrom along the same side as the first arm and the second arm is spaced from and substantially parallel to the first arm. One of the arms is adjustable along the body and is lockable to the body in a desired location. A single ball contact is connected to one of the arms in a manner which permits movement thereof with respect to the other of the arms along a line perpendicular to both arms. The gauge also includes a base pivotally mounted near an end of the other of the arms and has a pair of spaced ball contacts mounted thereto along the surface opposite the associated arm. The single ball contact and pair of ball contacts are oriented either both toward or both away from each other.