Imperial time units: here come the nunes

I caught an episode of Top Gear the other day. The rather excellent Jeremy Clarkson was talking about ‘driving very economically’ with a big Audi and mentioned all kinds of mpg (miles per gallon) measurements. For me, as I have lived in the metric system for all my life, conversion from ‘mpg‘ to ‘l/100km’ (liter/100 km) proved to be non-trivial. Some research revealed the following stunning data:

Length:
1 mile = 8 furlong / 1 furlong = 40 rod / 1 rod = 5.5 yard / 1 yard = 3 feet / 1 foot = 12 inch
Which gives us: 1 mile = 1760 yard or 1.609344 km
Weight:
1 stone = 14 pounds / 1 clove = 7 pounds / 1 pound = 16 ounces / 1 ounce = 16 drams
Which gives us: 1 stone = 224 ounce
Volume:
1 gallon = 4 quart / 1 quart = 2 pint / 1 US pint = 16 US fluid ounces but(!) 1 Imperial pint = 20 Imperial fluid ounces
Which gives us: 1 Imperial gallon = 160 Imperial fluid ounces or 4.54609188 liter

Two observations:

I propose the following:

[Inspired by: “The Hitch Hiker’s Guide to the Galaxy” – Douglas Adams]

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