Rigid Slow Motion Control to fit all 6mm shafts

This is a nice Rigid Slow Motion Controller that fits all 6mm shafts! The controllers are in really nice shape with no marks or blemishes on them at all! 

Using a rigid slow-motion controller for a telescope can offer several advantages:

1. Precise Tracking: Rigid slow-motion controllers allow for precise and smooth tracking of celestial objects. This is particularly important in astronomy, where even slight movements can cause objects to move out of the telescope's field of view.

2. Fine Adjustment: The slow-motion controls provide fine adjustments, allowing astronomers to precisely center and follow objects in the night sky. This is crucial for observations of planets, stars, and other celestial bodies.

3. Reduced Vibrations: Rigid slow-motion controllers help minimize vibrations that can be introduced when manually adjusting the telescope. This is essential for achieving clear and steady images, especially when observing faint or distant objects.

4. Extended Observation Time: The slow-motion controls enable astronomers to extend their observation time. Instead of making abrupt movements, they can smoothly track objects over time, enhancing the overall viewing experience.

5. Ease of Use: These controllers make it easier for observers to control the telescope, particularly during high-magnification observations. The slow-motion feature allows for more controlled and comfortable movements.

6. Photographic Applications: For astrophotography, a rigid slow-motion controller is beneficial in making precise adjustments to the telescope's position. This is crucial when capturing long-exposure images to avoid blurring.

7. Improved Observing Experience: Overall, the use of a rigid slow-motion controller contributes to a more enjoyable and immersive observing experience. It allows astronomers to focus on the details of celestial objects without constant manual adjustments.