Bob's Knobs for Collimation Screws for Vixen VMC260L Secondary - VMC260sec

Bob's Knobs   ——   SKU: BOB-VMC260sec
$49.00 CAD
Add to cart
Product Info

Bob's Knobs for Collimation Screws for Vixen VMC260L Secondary

Collimate your Telescope without special tools when you use Bob's Knobs! It's easy: Just grab a Bob's Knob Collimation Thumbscrew and turn it. You can even do it while looking through the eyepiece on many scopes. 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 if you wish. The factory dust cover will fit normally with Bob's Knobs installed on your secondary.

  • Installation is a snap with the included instructions
  • Modification can be undone at any time
  • Knobs are crafted from black plastic, stainless steel (silver)
  • No tools required to perform a collimation!

These Bob's Knobs VMC260sec will fit the Vixen VMC260L secondary mirror assembly.
Knobs: Black plastic, 16 mm (5/8”) diameter
Threads: Stainless steel


  1. These knobs sit very close to the secondary housing so the factory dust cover should fit fine. However, if the knobs contact the secondary housing before the screws reach the secondary mirror, Bob's Knobs can supply knobs with longer screws at no charge. Contact Khan Scope Centre for custom orders. If the knobs interfere with the dust cover a shower cap can be used as a substitute cover.

Welcome to the Loyalty Points Demo Store :-)

Sign up and receive 5000 pts to test out in our Store.

Earning and redeeming Reward Points

Earns you
Redeems to

Ways you can earn

  • Product Purchase
  • Refer a friend
  • Share on social media

Learn more about our program