feature: 1.It can be used to measure height. 2. Stable and reliable performance, accurate reading, no overspeed error. 3. High-level exquisite workmanship. 4. Hardening, steel bars have a long service life. 5. The round nose scribe cuts cleanly, the lines are smooth and the pressure is small. 6. Lock to fix the cursor in place. 7. Adjust the thumb roller to measure. 8. Hardened, lapped and ground base with finger slots for easy movement. Specification: Type: Altimeter Measuring Range: 0-300mm Material: Carbon Steel Function: Measuring Height Notice: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 x Altimeter