Standard Screw rectify of screw-pitch before using the inner and outer screw pitch.

NR.	Type	Specification	Usage
642-016	LJK	1:16 8/in 10/in1:16 5/in1:6 4/in1:4 4/in 1:4 5/in
			Rectify of screw-pitch before using the inner and outer screw pitch.
642-017	CGK	1:16 8/in 10/in1:16 5/in1:6 4/inV-0.038R1:4 4/in V-0.038R1:4 5/inV-0.0401:4 4/in V-0.0501:6 4/in V-0.050
			Rectify of screw height before using the inner and outer screw height and inspect the measuring point.
642-018	CLT	Φ1.448mmΦ1.575mmΦ1.829mmΦ2.286mmmΦ3.658mm	,
			Select the measuring point according to the screw specifications.

Standard Screw

instrument for pipe screw thread