Hi I need to collimate my collimater. I see the 3 small hex screws for adjustments, but what is the bigger silver hex adjustment used for?

thanks

steve

Personally , I would send that tool back to Orion & purchase the Baader Lasercolli at $80.00 it's a little more money but well worth the extra . 

Just curious, How do you know that your Collimator needs collimating?

Did you make a jig to check it?

If you can post a picture of the screws in question I,m sure that someone in here can help, other than recommend that you return it.

It's rather simple to make a jig to check to see if the laser collimator is out of whack. 

Get back to us with a pic of the inside!

Dennis