Correct option is C
A
screw pitch gauge is specifically designed to measure the pitch of a threaded fastener. It consists of a set of blades with pre-cut profiles corresponding to various thread pitches. The blade that matches the thread spacing provides the pitch measurement. This tool is essential in identifying thread specifications in both metric and imperial systems. Screw pitch gauge used to check the pitch of external and internal threads.
A feeler gauge is used to measure the clearance between two mating parts.
Radius gauge are used to check size of outside and inside radius.
