Canada

I only use fare height when forced through the means of technology that for some reason hasn't been legislated to provide sane units mandatorily when sold in Canada

The exceptions to this would be lumber. Then occasionally I get pissed off at any Canadian company (or even government form) that refuses to follow our own standards. For instance federally, its recemmoneded to use YYYY-MM-DD unless you're writing out the month with three letters or more in which case you can use the insane states method. Yet consistently in forms I input the date wrong cause they do whatever that other format is