Micrometer with dial 150-175 mm

Painted frame with hard metal contacts. Easy-to-read dial markings, with carefully executed characters and incision depth. Particularly accurate screw spindle machining, obtained in an environment kept at 20°C. The screw is fully hardened and stabilized; after roughing the thread, it is subjected to a special ageing treatment before finishing, to avoid variations due to residual internal stresses. Contact surfaces are extremely finely finished to Ra 0.025 µm.

Easily accessible locking device. Thermal insulation plates applied to the frame. Steel lamina friction that, by size and position on the thimble, meets the dual requirement of accessibility both on the support (see art. SUM) and in the more frequent one when holding the workpiece and the instrument in hand. They feature a dial reading system that makes them extremely easy to use, even for non-expert personnel. Frame with thermal insulation. Hard metal contacts.