A rasp is coarse form of file used for coarsely shaping wood or other material. Typically a hand tool, it consists of a generally tapered rectangular, round, or half-round sectioned bar of case hardened steel with distinct, individually cut teeth.

V-Blocks are precision metalworking jigs typically used to hold round metal rods or pipes for performing drilling or milling operations.
They consist of a rectangular steel or cast iron block with a 90-degree channel rotated 45-degrees from the sides, forming a V-shaped channel in the top.

scribing block is a gauge consisting of a scriber mounted on an adjustable stand; used to test the accuracy of plane surfaces.

The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is Vernier caliper.