1. Zero point calibration and multi-point calibration 2. Self-calibration accuracy measurement 3. High sensitivity probe 4. Wide range of applications, automotive work, industrial production, mechanical processing, equipment production, etc. 5. High definition display 6. Anti-slip groove design 7. Measurement range: 0.05-2.00mm 8. Display mode: electronic digital display 9. Power supply voltage: 3V 10. Power supply: 2 sections of 1.5V AAA batteries (not included) 11. Size: 12.2 x 5 x 2.2cm