| Manufacturer | Bob's Knobs |
|---|---|
| MPN | C8std |
| Brand | Bob's Knobs |
| Type | Accessory |
Check the listing for details. Bobs Knobs Celestron C8 Post-1980 Secondary Standard Collimation Thread C8std. Condition: New. Listed at 20.10 USD. Part: C8std. Make sure the knob threads match the factory screw threads before installing the knobs. 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 scopes.
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