Features: Range:5-30mm /25-50mm/50-75mm/75-100mm/ Accuracy:0.01mm Non-rotating spindle. With Satin-chrome scale heat insulation grip. Measuring faces is made of tungsten carbide. Constant force ratchet on thimble Package including: 1pc x inside micrometer 1pc x original box Ideal woodworking tool can be used for a variety of marking out jobs. for engineers, craft persons, model makers, etc.