oporto16
11
I've seen the hourglass-shaped balance wheel in Wyler's Tourbillon...
...in the PDF talking about BNB Concept.
Imagine this:
By: cen@jkt : October 29th, 2007-00:35
A man comes home and confess to his wife: Sorry, I just spend an enormous amount of money and buy a nice tourbillon, Bell & Ross. It's cool, carbon fiber, and all the high tech stuff. I'm going to a GTG next week, must be the biggest dog in the yard. Then...