Assuming you have the time, I wouldn't even use the nomograph. There's an easier and more accurate way. Start your stopwatch, and put a mark on the target's position where you start the watch (can be done while paused for accuracy). If you're using Imperial measurements let it run for 3 minutes, or 3 minutes 15 seconds if you're using Metric measurements, then put another mark on the target position. Measure the distance covered by the target. Every hundred yards or meters is 1 knot of speed.
__________________
We, the unwilling, led by the unknowing, are doing the impossible for the ungrateful. We have done so much, for so long, with so little, that we are now qualified to do anything with nothing.
|