Compact 60mm Guidescope finderscope with Helical Focuser, MicroFocuser guiding telescope
Orion 60mm Multi-Use Guide Scope with Helical Focuser | High Point Scientific
StarField 60mm Guide scope Gen II
Amazon.com : Astromania 60mm Compact Deluxe Finder & Guidescope Kit with 1.25" Double Helical Focuser - Guiding with The Mini-Guide Scope: So Astrophotography is Easier and Less Equipment : Electronics