The Stepper MicroTouch Motor Unit for FSQ by Starizona:

This part consists of an extra stepper motor for the MicroTouch auto-focuser, and can be installed when two speed focusers are being used with a Takahashi FSQ-106 or FSQ-85 telescope. It enhances the fine-focus knob on the FSQ focuser to a greater level of precision focusing.

OPT Product Number: S6-MTAF-SMFSQ

• Accessory for enhancing precision focus of FSQ focusers
• For use with dual speed focusers on FSQ-106 and FSQ-85

• Single Stepper Motor for Takahashi FSQ