Fitz de bon après-midi,

c'est un manteau intéressant.....

The metric length system was established in France in the late 18th century by dividing up the circumference of the Earth. Naturally, they got that wrong so where's the relevance?

And I like my pint!

Right on! A foot is a foot's length, an inch is the top thumb bone, a yard is a pace. A cubit the distance from the elbow to the tip of the middle finger. Ell is a bit odd because it is 45 inches and that is too long for an arm. Furlongs and chains speak for themselves. They are all still useful as rough and ready measures.

I just cannot cope with heights in metres and have no idea whatsoever of distances and speeds in kilometres.

Will we face prosecution like the traders who tried to hang on to pounds and ounces?

1, 10, 100, 1000, 10,000, 100,000, 1,000,000...

You want something more common sense than that? You can do it using fingers and toes! (Well, the majority of the earth's population can).

1.618 and 13 inches, bakers dozen.