Apertura Secondary Mirror Collimation Knobs - CK

Apertura Secondary Mirror Collimation Knobs Adding these Secondary Mirror Collimation Knobs to you Apertura Dobsonian Telescope set up will make collimation a breeze! There are three Apertura Secondary Mirror Collimation Knobs to replace each of the secondary collimation screws that originally come with your Apertura Dobsonian. You don't need a wrench, so you can quickly and easy collimate your Dob without worrying about damaging the telescope. To install the Apertura Collimation Knobs, remove each of the factory secondary collimation screws and replace with the Apertura Collimation Knobs. Then you are ready to collimate your Apertura Dob!   This Product Comes with the Apertura Absolute Warranty! Two-Year Warranty against product defects.   Three-Year Accident Replacement Program that begins after your initial 2 year warranty expires.   Your Apertura Absolute Warranty is transferable.   Download a copy of the Apertura Absolute Warranty for more information on this program