it's mixing systems that causes issues
Aye .. the laddie speaks the truth ... I guess all engineers agonised for a term or so during their first undergraduate year coming to grips with 438,972 different systems of units of measure ..
.. mind you ... I was about 35 before I encountered the cheval (and had not the slightest idea what it was) .. I still am greatly confused as to why it isn't closer to the HP (at least, for those for whom size is important .. the English HP is bigger than the French) and as to 75kg.m/s, well that just about confuses me beyond comprehension ....
... then again, the Canadian French use CV for the English, rather than the French HP ... I think now .. I should just admit defeat ... give up and go to bed ..
The key thing is that everyone uses the same one.
Of course that is the answer to MFS' concern ... apologies if my imperfect attempt at humour caused me to be taken seriously .... I am rarely serious ..
are all the subcontractors in this "international build-off" used to building in imperial units
.. ah .. therein lies the empire whose name is QA ...