How does it work in si? Do you use strictly meters? Or a combination of m and cm? What do you do if you have 62.5cm? Do you call it 5/8 of a meter, or .625 meters?
You would simply use 62.5cm. A metric tape measure will have tick marks at 10ths between each base number so 62 plus 5 tick marks. Everything is in 10ths....and 62.5cm is 625mm, 6.25 decimeters (not used that often), and 0.625 meters. It's much simpler than what we do here today. 5/64" is much more difficult to enter in a computer.
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?).
