Join Date: Aug 2008
Location: Tucson, Arizona
Bikes: '02 Lemond Buenos Aires, '98 Fuji Touring w/ Shimano Nexus premium, '06 Jamis Nova 853 cross frame set up as commuter, '03 Fuji Roubaix Pro 853 back up training bike
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I have a late 80's Univega that takes a 26.4 race.
Those $20 digital calipers are a great investment. You can use them to measure seat tube derailleur clamp sizes, seat post diameters, chain line, stack heights, BB shell widths, axle lengths, flange diameters and flange-to-center lengths for wheel building, Q-factor, headset and axle spacer widths, etc. Without doubt, it's the most useful took for choosing components sizes.