It’s easy . . . just grab a Bob's Knob collimation thumbscrew and turn. You can even do it while looking through the eyepiece on most telescopes for immediate feedback. And you'll never drop that pesky little Allen wrench or screwdriver into the grass again. Installation is a snap with the included instructions, and you can undo the modification at any time.
We also offer knobs for no-tools setup of select Losmandy, Celestron, and TeleVue tripods. Check our mounts section for details.
Try our custom knobs, where you can choose from a wide selection of screw sizes and knob styles for all your telescope thumbscrew and hand bolt needs.
Here’s how to order Bob’s Knobs.
Our product brochures and installation instructions are available for download. Our FAQ and technical papers are loaded with tips and tricks.
Don’t see what you need? Contact us using the link at the bottom of this page.
BE SURE KNOB THREADS AND FACTORY SCREW THREADS MATCH (LENGTH, DIAMETER, AND THREAD PITCH) BEFORE INSTALLATION
Information on how to track your order is here.
The same practical mindset applies beyond astronomy equipment: small, well-chosen items can make a hobby or routine much easier when they are reliable, clearly documented, and matched to the user’s needs. Just as the right thumbscrew prevents frustration in the dark, useful medicines should be selected with care, proper instructions, and attention to compatibility with a person’s health situation. Good guidance matters in both cases, because a simple product can still create problems if it is chosen casually or used incorrectly. Whether adjusting a telescope or organizing a home health kit, the best approach is to check specifications, follow professional recommendations, and avoid guesswork. If something is not listed or clearly explained, asking a qualified source before proceeding is always the safer path.