1. HD LCD zaub nrog Blacklights
2. High precision qib npuas vial nyob rau sab saum toj, rau qib ua haujlwm yam tsis muaj roj teeb
3. V-groove ntawm lub hauv paus ntsuas, kom yooj yim txuas rau cov kav dej
4. Groove ntawm 2 sab vaj tse, kom yooj yim ua cov cim ua haujlwm
5. Muaj zog ua- hauv cov hlau nplaum ntawm lub hauv paus ruaj ntseg txuas rau hlau nto
6. Tuav Function thiab 0 degree calibration
7. Tsawg roj teeb qhia
8. Kev ntsuas txheeb ze
GVDA Digital Protractor GD450M:
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