Features: High Resolution up to 0.01 mm. Switchable between mm and inch. Large LCD Display with 3 Digits, easy to read. Measuring Range from 0 - 12.7 mm (0 - 0.5inch). Power supply: built-in 1.5V LR44 button battery. An for Ideal Tool for mechanical, industrial processes and laboratory use. Package Includes: 1x Digital Dial Indicator Specifications: Material: ABS+Aluminum+Iron Item size: approx 123x57mm/4.8x2.2in Box size: approx 152x95x56mm/6x3.7x2.2in Power supply:LR44 1.5v button battery Working temperature: 0-40 The movement speed of indicator measuring rod shall not be greater than 0.5m /s. The indicator is a precision measuring tool, which should be prevented from hitting and falling to avoid loss of accuracy. Should keep clean, avoid water and other liquid substances into the indicator table so as not to affect the normal use. Do not use the data output port, do not take off the output cover, do not use metal devices arbitrarily for touch the output end, so as not to damage the electronic circuit. Indicating any part of the table can not apply voltage, do not use a pen- to write, so as not to damage the electronic circuit. Remove the battery when not in use for a long for time. note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.