A micrometer is device to measure length of any object. Traditionally, mechanical micrometer was used to do this function. But nowadays, almost all are using a digital micrometer. One of the best makers is Mitutoyo. Mitutoyo digital micrometer is known for its quality and durability. This micrometer has digital readout to display measurements which is directly connected to encoder. Now function of this encoder is unique, which can readout the axial measurement. Its spindle is integrated with thimble. So, when a thimble of micrometer rotates spindle also rotates, which helps encoder to measure reading perfectly. All these parts are made with such a care and quality machinery that it gives accuracy of .25 mm.