Originally Posted by
RubberLegs
Sheldon Brown answers with a BIG CHART:
Barracuda, Bridgestone, Capo, Diamondback, Electra, Fat City, Fuji, and Gitane. Most of them only one model for a short time....so, YES, a bit of an oddball size, but not totally uncommon, just enough to make it more difficult to find.
http://sheldonbrown.com/seatpost-sizes.html
Rubberlegs, thanks for posting that link, a chart for the workshop wall! I'd seen it somewhere before a while ago but couldn't find it in my downloads. A useful reference as I've found digital verniers don't help a lot if the clamp area is out of round! Also useful to post possible applications if you are selling an unusual size post on the 'bay. :-)