Usage Tips:Features: Durable and practical Portable,very convenient to carry out Large screen display,read it very clearly Can switch between mm and inch Specification: Resolution: Digital indicator:0.01mm/0.0005" Digital mini-indicator:0.001mm/0.00005" Measuring Range: Digital indicator:0~12.7mm/0.5",0~25.4mm/1" Digital mini-indicator:0~5mm/0.2",0~12.7mm/0.5",0~25.4mm/1" Power:One silver oxide battery(SR44) with work voltage 1.5v(Not included) Operating temperature:0 Celsius~40 Celsius Storage temperature:-20 Celsius~70 Celsius Relative humidity:Less than equal 80% The response speed:Less than equal 0.5m/s Size:L x W x H/12 x 5.5 x 2.5cm/4.72 x 2.16 x 0.98" Material:Aluminum Alloy Color:As pictures Package include:1 x Digital dial indicator(Battery is not included) 1 x Instruction Manual Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.