The Metric System

I recall when i was working for a house builder,metric blueprints designed for metric lumber.
Someone got their *** kicked for that one.
Builder tried, but ended up converting and building better than minimum standard.
Never touched a meteric blueprint again.

I recall doing a timing chain in a crown vic with a 5.0.
Can you say every tool in the box?
Studs with sae on one end,metric on the other.
2003 ram.5.9 gas. Sae hardware. I was suprised at that when i did timing chain.