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Step 1
Measure off 10 yards (30 feet) and place something on the ground. Now you know what 10 yards looks like.
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Step 2
Practice walking around the yard and trying to find objects that are about 10 yards from you. You can measure to be sure, but usually stepping off the distance will give a close enough approximation.
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Step 3
Once you are comfortable with judging 10 yards, imagine a giagantic stick, a 10 yard stick. Now flop it end for end so that you have doubled the distance. Now, if you can range 10 yards you should be able to approximate 20 yards using this method.
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Step 4
Next practice doubleing 20 yards to get 40. Always remember when you are rangeing an object to first range 10 yards and then begin doubling it or adding another 10 yards until you get a close approximation of the distance.












