0.08

0.082

0.084

0.09

Core dia = Measurement over prisms ? Height of prisms ? Single depth of thread

Core dia = Measurement over prisms ? Height of prisms + Two depth

Core dia = Measurement over prisms + Height of prisms ? Single depth

Core dia = Measurement over prisms ? Height of prisms + Single depth

30/120

50/120

40/120

40/150

4 times

5 times

6 times

3 times

To measure the minor diameter of external thread

To measure the minor diameter of internal thread

To measure the major diameter of external thread

To measure the major diameter of internal thread