Digital Dial Indicator 0.01mm Large LCD display with 4 digits, can be used to measure accurate linear distances in processes and without reading errors, an ideal tool for mechanical, industrial and laboratory use. 0~12.7mm Measuring Range0~12.7mm (0~0.5 inch) measuring range, high resolution up to 0.01mm. Back DiameterHole Diameter: 6.5mm, it is removable and can be used on different magnetic mounts, aluminum alloy make it durable. Inch/Metric Conversion Conversion between mm and inch, suitable for all kinds of measurement. Zero Adjustment, with Convenient PortsRS232 data output interface and SR44 battery compartment, easy to replace the battery. Overview: This digital comparator is used to accurately measure small linear distances in mechanical and industrial processes without reading errors. The instrument can check the tolerance level during the inspection process of the part of the machine. It is an ideal tool for mechanical, industrial and laboratory use. Features: Large LCD display with 4 digits 0~12.7mm (0~0.5 inch) measuring range High resolution up to 0.001mm (0.00005") Switchable between mm and inch Adjustment from zero specifications: Measurement range: 0 ~ 12.7 mm (0 ~ 0.5 inch) Resolution: 0.01mm Response time: 0.5m/s Operating temperature: 0 ~ 40 C (32 ~ 104 F) Storage temperature: -20 ~ 70 C (-4 ~ 158 F) Relative humidity: 80% R.H Material: Aluminum alloy Power supply: 1 x 1.5V SR44 Button Battery Color: Grey Size: 12.4*5.7*2.5 cm. Package quantity: 1 piece