Push the button in on either side of the vernier adjustment and push it forward. As it moves forward the vernier (or tangent as it's also called) will rise for the targeting at the further distances.
Release the 'buttons' and the adjustment will lock at any of the marked distances.
IIRC the markings are in meters.
Last edited by 2152hq; 01-03-2018 at 12:04 AM.
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