Quote:
Originally Posted by CapriRacer
Actually, my reaction was "I wouldn't have thought anyone would do it that way, even though that's a pretty good way to do it."
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Folks that are into bicycling (as I am) that need to calibrate bike computers will measure this way too (rather than use a tape measure around the circumference)... not that bike computers need to be all that precise, but still the same idea. I usually use chalk on the tread which then leaves a mark on the pavement for several revolutions before becoming too faded, and then measure between the marks.