-External micrometer for treated steel thread.
-Delivered with 4 pairs of hardened and rectified steel measuring keys.
- Used to control most of the metric and UN threads at 60 ° included in the measurement range of 0-25 mm.
- All delivered in a box
* 5.5 - 7 TPI 4.5 à 3.5
* 24 - 14 TPI 1 à 1.75
* 44 - 28 TPI 0.6 à 0.9
* 8 à 5 TPI 3.5 à 5
* 13 à 9 tpi 2 à 3

-External micrometer for treated steel thread.
-Delivered with 4 pairs of hardened and rectified steel measuring keys.
- Used to control most metric and UN threads at 60 ° within the measurement range of 25 to 50 mm.
- All delivered in a box with a stallion of 25 mm 60°