1. Stepless adjustment, 18-24MM arbitrary length adjustment
2. This tool can be permanently installed on the telescope, no need to reload and unload.
3. The adjuster adjusts the distance by rotating itself, and other parts do not rotate.
4. With locking device, limited function.
5. Full screw design, extremely small clearance, will not cause the device to shake after locking
6. Full screw adjustment ensures focal plane stability.