The screw thread micrometer has 25 to 50 mm with 3.5 to 5 mm/8-5TPI and has a fixed anvil and directly indicates screw pitch diameter, thus, no need for calculation.
The screw thread micrometer has 25 to 50 mm with 3.5 to 5 mm/8-5TPI and has a fixed anvil and directly indicates screw pitch diameter, thus, no need for calculation.