Item Type: Digital Indicator_x000D_ Size: Approx. 5.7 x 12.5cm / 2.2 x 4.9in_x000D_ Battery Type: Button battery_x000D_ Battery Model: LR44_x000D_ Nominal Battery Capacity (unit: MAh): 160_x000D_ Range: Approx. 12.7mm / 0.5in_x000D_ Accuracy: 0.01mm_x000D_ Scope of Application: Industrial production, mechanical maintenance, scientific research experiments, daily teaching_x000D_ Back Cover Diameter: Approx. 5.7mm / 0.2in 1With a large LCD display, can be used to accurately measure small linear distances in machinery and industrial processes without reading errors, which is a perfect tool for machinery, industrial processes and laboratories 2Included removable back cover possess 5.7mm diameter, can be used for different magnetic base brackets 3Inch/metric conversion-can switch between millimeters and inches, suitable for various measurements 4Zero setting with convenient port?RS232 data output interface and LR44 battery compartment, battery can be replaced eastward 5Possess measuring range from 0 to 12.7mm, high resolution up to 0.01 mm (0.0005in) 1 x Digital Indicator 1 x Back Cover 1 x User Manual 1. Please allow tiny size error due to manual measurement. Thanks for your understanding. _x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.