this post was submitted on 09 Dec 2024
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[–] ThePyroPython@lemmy.world 236 points 7 months ago (76 children)

May I present to you, how to measure like a Brit

Flow chart showing the uses for metric and imperial in the UK

It's great fun especially when you're trying to work out how fuel efficient your car has been when your tank and fuel pump is in litres and the fuel efficiency is in miles per gallon.

Oh and you'll have a jolly time following a recipe from more than 20 years ago trying to remember what the hell "Gas Mark 4" is in centigrade for fan or convection ovens.

Oh and my personal favourite for the industry I'm in: when designing a PCB your component sizes will use imperial codes, your wire diameters will be in AWG, your track widths and PCB dimensions will be in millimetres, but your copper thicknesses will be in ounces despite the final weight for the assembly will be in grams.

[–] addie@feddit.uk 38 points 7 months ago (8 children)

Bear in mind that the gallon we use is different from the US gallon, too:

  • a UK gallon is eight (imperial) pints of 20 fluid ounces, so 4.54 litres
  • a US gallon is 231 cubic inches, so 3.79 litres

The reason that I thought American car fuel economy was so terrible as a child is partly because UK mpg is +20% on US mpg for the same car on the same fuel. But also, because American car fuel economy is so terrible.

[–] dankm@lemmy.ca 3 points 7 months ago

It's weirder when you look at Canada vs USA. Mileage here is usually written L/100km, but back in the day the cars were exactly the same but the mileage in Canada was better because the the US gallon is only ~83% the size of a proper gallon.

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