To check the collimator, make a jig out of timber with two pieces cut into a v. screw both pieces to a flat piece of timber and then place the collimator in the V's length ways. Get a piece of white paper and put it around 10 feet away and turn on the laser and point it at the paper. Mark the paper where the laser hits and then roll the laser 90 degrees. Repeat the first step and then roll again another 90. Repeat this until you have gone all the way around. Turn off the laser and look at the marks you have left. With any luck you will have a collimator that can be adjusted. If the collimator is out adjust it and then try collimating your scope again. If the collimator cannot be adjusted and it is out return it to the place of purchase and ask for another on.
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