Originally Posted by
Hobbiano
My mid-eighties Miyata 610 is 21" and measured center to top. As are my various 70's and 80's Trek, Schwinn, and Centurion road bikes.
Thanks. Maybe. The sizes are metric according to this (year?) catalog. But off course all sizes can be measured with any unit, and they will always match at whole numbers somewhere. Hasn't Japan been a metric country for a long time?