To Todd's point, even our framing centers would eventually change to align with the metric system which impacts code and everything else. 16" centers (40.64cm) would become 50cm or 40cm centers or something standard and easily divisible (I wonder what european framing standards are in that regard?).
Dude, come to FL. You are required to toss out your plumb, level and tape measure in order to sit for the GC exam. English or Metric, it doesn't matter... There is no such thing as a straight wall or 90 degree corner in construction here.
16" center ppttthhh... we use "dat oughta doit" measurement.
