Originally Posted by
maddog34
and please do verify the stem-bar clamp size before you buy different bars.
you can cut a piece of card paper in an increasingly wider parallel opening to get a "caliper" type measurement of a bar.
Or just use an adjustable wrench - I even have one that has millimetres etched on the side (not quite precise enough for this application though, where you may need to measure to 0.1 mm). But really everyone should have some calipers, because you need to measure multiple bike parts for fit or wear - $10 gets you a digital one or a Vernier caliper (but spend a bit more if you're going to be using it regularly - you can feel the difference).