With this new generation of reference micrometers, Mahr once again sets a new standard in the micrometer product segment. the new reference system from Mahr is extremely energy efficient, when the micrometer is in standby mode almost no power is required; thus doubling the life span of the battery compared to a conventional digital micrometer. Mahr's Micromar 4151706 40 EWR Digital Micrometer has a 1 to 2" (25 to 50mm) measuring range with 0.00005" (0.001mm) resolution for precision results. Micromar with the REFERENCE symbol are equipped with the innovative Reference-System. The zero position just has to be set once: after setting the zero position, the zero remains stored for all further measurements. Therefore, once the micrometer is switched ON or the slide is moved the caliper is immediately ready for measurement. The need to reset to zero with a conventional caliper once the caliper is switched on has now become obsolete. With MarConnect there is no interface required. Data acquisition with MarCom Professional 5.0 now no longer requires an interface box; even so you do not lose the functionality of an interface box. Trouble free connection to measuring instruments. With MarCom all Mahr measuring instruments with MarConnect interfaces RS232, USB or Integrated Wireless can be connected; simply extend the measuring workplace with USB Hubs. Its Large digital readout LCD shows inch or metric units for versatility, and allows either absolute or incremental measurement readings. Due to the outstanding IP65 protection against dust and water the Micromar 4151706 40 EWR Reference delivers precise and secure results even in the most difficult workshop conditions. The finished plastic components have an excellent outstanding chemical resistance. Micrometers are measuring instruments commonly used for inspection in manufacturing to measure length and step values for versatility and includes a protective case and battery.