English 
Chinese 
- 2-dimension tilt adjsutment;
- Fine adjustment driven by fine adjustment screw thread pair,locking mechanism with special fine adjsutment screw thread pair to ensure stable light path;
- Reset with imported high quality butterfly-shaped spring,extremely high stability ,high hardness ceramic screw carrier rod,long service life;
- Stable,safe and reliable,with lens fixed with pressing ring;
- 2-direction screw fixing holes for easy mounting .
