Originally Posted by
gregf83
Rounding up isn't wrong it's just an indication of the precision required.
Normally yes but they are quite specific in that they give them a different letter. I .e. a 'K' spacer is 2.6mm whereas an 'O' spacer is 2.55.
If the measurements were quoted to a specific order of magnitude it would seem odd that they abandon that convention at different points on the same page.
The operational difference is probably negligible though, you're right.
I was kind of looking for someone with a knowledge of he mysterious world of campagnolo cassettes rather than some brut common sense, which i think i have myself. Curiosity has prompted me rather than an ignorance of measurement science.