Thread gaging apparatus and method

摘要

An instrument for gaging a first shoulder on a workpiece having an axis includes a support and holder means to releasably connect the support to the workpiece; the support includes datum structure to engage a second shoulder on the workpiece to establish an axial reference. A gaging part is provided to move into and out of engagement with the first shoulder on the workpiece; and a carriage for the gaging part includes a first section movable axially and a second section movable radially. The gaging part is mounted on one of the two sections that is carried by and movable independently of the other section. Means is operatively connected to at least one of the two sections to produce output indicative of the extent of movement of the gaging part.