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box test

  1. MCMXI

    So who here does "box" or "tall target" tests on their optics?

    This is such a simple test to perform but it seems that so few do it. Not only can you figure out if your optic needs a correction in the form of a mathematical constant that is applied to elevation changes, but you'll know if the tracking is repeatable. I wonder if it's not a popular test...
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