Micrometers for outside measurements 175-200 mm

Painted frame with hard metal contacts. Reading is made easier by careful character engraving and depth

of the incisions. Particularly accurate screw spindle machining, obtained in an environment kept at 20°C. Screw 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 highly refined 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 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 fixed counter-spindle are available with a measuring range of 25 mm. Not supplied with zero-setting reference.