Micrometri per esterni 100-150 mm

Painted frame with hard metal contacts. Reading is made easier by the careful execution of the characters, the depth

of the engravings. 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 Ra 0,025 µm. Locking device easily accessible. Thermal insulation plates applied to the frame. Steel lamina friction which, depending on size and position on the thimble, meets the dual requirement of accessibility both on the support (see SUM) and in the more frequent use with the workpiece and the instrument held in hand.

Micrometers for measurements above 100 mm have a measuring range of 50 mm using an adjustable counter-spindle. For measurements up to 200 mm, micrometers with a fixed counter-spindle are available with a measuring range of 25 mm. Not supplied with a zero-setting reference.