Verktyg@aol.com wrote:
> How the Italian bicycle industry adopted a thread system with metric
> dimensions for diameters and threads per inch (tpi) for the pitch is beyond
> my comprehension.
1) they were Italian ;) 2) changing a diameter on a product is no big deal, changing the pitch on threadcutting machinery or threadrolling dies would mean a considerable investment -- mvg
Marten Gerritsen
Kiel Windeweer
Netherlands