零售價$29的自行車速度表誤差僅 --- 0.1%

from edmunds user forum

“I bought a $29 odometer for my daughter's bicyle. It measures to 0.01 mile increments and is guaranteed accurate to within 0.1%, according to the owners manual (but still not to be used for "official" marathon or event measurement). She's ridden an accurately measured bike/jogging path with 0.1 mile markers (which is used for running 10k races) and it's dead on. So if Trek can sell a bicylce odometer that is accurate to within 0.1% for $29, I think Honda can do better than 30+ times worse. ”
 

http://townhall-talk.edmunds.com/direct/view/.f10dd8f/20