Abstract: A wear gauge confirms the acceptability of an outside diameter of a down hole drilling tool for down hole service. An embodiment of the wear gauge has two arcuate members pivotally connected in overlapping attachment, where each arcuate member has opposing ends and an arc length is defined between the two ends. Each of the opposing ends has an aperture penetrating through the width of the arcuate member. The free ends may be pivoted together into an overlapping configuration into a closed position. When in the closed position, the two arcuate members define a circle. The diameter of the circle is certified to be a specific value within a designated tolerance.

Abstract: An apparatus for measuring the dimensions of an articulated connector for reconditioning while it is still mounted to the end structure of a rail car is disclosed. The connector is measured to find areas and amounts of wear on portions of the connector. The measurements are taken relative to a reference portion of the connector. A pivot gauge apparatus can be used to determine if a male casting meets industry standards. The pivot gauge includes a fixable base for interaction with the casting and a pivotably mounted arm with measurement portions.

Abstract: A method for confirming the dimensions of an articulated connector while it is still mounted to the end structure of a rail car is disclosed. The connector is measured by use of a gauge secured to a reference point on portions of the connector. Another portion of the gauge is aligned with a non-reference point to determine if the dimensions fall within industry standards.

Abstract: The gage has a body made of flat plate which has a reference edge. Another edge is a gage edge which is angular and defines a sharp apex away from the gage edge. A foot is slidable along the gage edge to rotate the gage body around the sharp apex pivot. Indicia indicate the angle at different foot positions.

Abstract: The apparatus forms a combined locating pin and gage for supporting and measuring two pieces of an assembly. The method for using the apparatus includes measuring an opening within each piece of the assembly using the limit gage portion of the apparatus and then locating the pieces together to form a temporary assembly using the gage as the shank of the locating pin portion of the apparatus. The apparatus includes a handle and a shank extending from the handle. In order to use the locating pin and gage apparatus, the mid-section of the shank forms a limit gage and has an outer diameter of a fixed dimension for measuring an opening within the two pieces of the assembly. If the diameter of each opening is within the predetermined limit set for the openings, then the handle of the apparatus is rotated in either direction, correspondingly rotating the lower locking section and causing the locking section to contact the lower piece, effectively temporarily and positively locking the assembly together.