Features: 1. Digital Display Dial Indicator, IP54 Waterproof/Oil-Proof/Dust-Proof, Large-Screen Digital Display, Sensitive Response, Metric And Inch Interchangeable 2. IP54 Protection, Oil-Proof, Splash-Proof And Dust-Proof. It Cannot Be Immersed In Oil Or Water. If There Is Liquid On The Watch Body, It Must Be Wiped Clean In Time. 3. Large-Screen Digital Display, Easy To Read, And Will Automatically Shut Down If Not Used For A Long Time. 4. Detachable Probe, Easy To Replace, Probe Thread Model: M2.5, Long Probe Can Be Replaced As Needed 5. 3V Button Battery. The Battery Provided Is For Testing Product Performance And Does Not Its Service Life. The Battery Should Be Installed With The Word Facing Up. Description: 1. Product Name: Digital Display Dial Indicator 3. Specifications: Dial Indicator (0.01mm) 4. Power Supply: 3V Button Battery 5. Protection Level: Waterproof/Splash/Oil/Dustproof 6. Measuring Range: 0-12.7mm 7. Accuracy: 0.02mm 8. Function: Mainly Used To Detect The Shape And Position Errors Of Workpieces (Such As Roundness, Flatness, Verticality, Runout, Etc.); It Can Also Be Used To Correct The Installation Position Of Parts And Measure The Inner Diameter Of Parts, Etc. Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Material: plastic colour: As shown Package Contents: 1 x Digital display indicator 2 x External 3V batteries Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.