Cutting speed

Feed

Depth of cut

Material

Measure effective diameter

Measure minor diameter

Measure major diameter

Measure pitch of the thread

Same as British chasing dial

One worm wheel and different dial

One worm wheel and one dial

More than one worm wheel and different dial

122

125

127

129

0.6403 x 1/10 Inch

0.6134 x 1/10 Inch

0.6304 x 1/10 Inch

0.6314 x 1/10 Inch