For
instance, that deer cannot be over 800 yards away and not less than 400
yards. Your estimated distance is 600 yards.
2. Select a point which you think is the middle point of the distance,
estimate the distance to this middle point, and double your estimate to
get your range. Do the same thing with half the distance, if the object
is very far away.
3. Estimate the distance along a parallel line, such as a telephone line
or a railroad having on it a well-defined length with which you are
familiar.
4. Take the mean of several estimates made by several well-instructed
men. This method is used in battle, but is not applicable to instruction
or during tests.
1. Preliminary Instruction
To estimate distances by the eye with accuracy, it is first necessary
that you become familiar with the appearance of the most convenient unit
of length, namely 100 yards. Stake off a distance of 100 yards.
Subdivide this 100 yards into four 25-yard divisions. Pace off the
entire distance several times, and you will soon become familiar with
the appearance of 100 yards.
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