Originally Posted by
Uni-Vibe
Don't bother checking and measuring. That's a waste of time.
Change your chain every 1500 miles. Changing the chain that frequently will result in much longer cassette and chainring life. It's cheap maintenance.
"Rotating" used chains is also a waste of time.
It's not that cheap with 10 speed chains. 1500 miles for a lot of people on here is every 2-3 months (or even less).