The US doesn't use Imperial units, it wasn't part of the British Empire at the time that system was standardised. It uses US Statute Units which are similar bu

The US doesn't use Imperial units, it wasn't part of the British Empire at the time that system was standardised. It uses US Statute Units which are similar but not always the same as Imperial Units. There are some very important differences... Hence the reason that no Brit is ever impressed with a "pint" served in a US bar. It looks like the barman forgot to pour all of it. :P We should retire Imperial, US and Nautical units and switch everything to SI Metric. Having several definitions of mile, pint, gallon, foot, etc in use, at the same time, is just feckin' silly.