I give you this analog cosine indicator of my making for the very low price of FREE. Just download the picture, print it out on stiff paper, laminate it, and punch a hole in the top circle in the center of the cross. Then all you do is attach a string with a weight and BAM! You now have an effective way of telling your angle of fire. If you're not into long range shooting, then this probably means nothing to you... so carry on.
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