Checking the Collimator

Each collimator comes with a confidence gauge that is used to ensure that the collimator remains accurately calibrated.  It can be used at routine intervals (i.e. one time annually) or any time the collimator is dropped, bumped, etc.  At the top of the gauge there is a peep sight.  At the bottom there is a sleeve designed for the collimator mandrel to slide into (the opening of the sleeve will be exactly the same diameter s the bore of the weapon the collimator is designed to work with).  At the back of the sleeve there is a bar that stops the spigot to ensure that it is not over-inserted.  To use the checker:

  1. Insert the mandrel into the sleeve at the bottom of the checker until it contacts the stop (see figure).
  2. Rotate the checker so that the peep sight is lined up roughly with the collimator optical tube.
  3. Hold the collimator at the main body. Avoid touching or putting pressure on the checker, which can move it out of alignment. 

Look though the peep sight (you’ll need to get very close to see through it).  You should see the collimator grid and a complete circle around the grid.  If the entire circle is visible, the collimator is properly calibrated.  If the entire circle is not visible, contact us


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Telluric Group, LLC
136 Venture Drive
Brunswick, GA 31525 USA

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