The Jones Counter is a device fitted to the front wheel of a bicycle which counts the revolutions of the wheel. It was invented in 1971 by Alan Jones in order to measure the length of road running race courses. It has gears that drive a mechanical digital counter. Depending on the gear ratio used, one count typically corresponds to about 1/20th of a wheel revolution. This provides a resolution of about 10 cm in course length, although overall accuracy, depending on calibration and other factors, is lower, but normally better than 1 part in 1000.
Read more about Jones Counter: Use of The Counter For Measuring Road Race Courses
Famous quotes containing the words jones and/or counter:
“Romance, like the rabbit at the dog track, is the elusive, fake, and never attained reward which, for the benefit and amusement of our masters, keeps us running and thinking in safe circles.”
—Beverly Jones (b. 1927)
“I’d take the bus downtown with my mother, and the big thing was to sit at the counter and get an orange drink and a tuna sandwich on toast. I thought I was living large!... When I was at the Ritz with the publisher a few months ago, I did think, “Oh my God, I’m in the Ritz tearoom.” ... The person who was so happy to sit at the Woolworths counter is now sitting at the Ritz, listening to the harp, and wondering what tea to order.... [ellipsis in source] Am I awake?”
—Connie Porter (b. 1959)