The ‘joy’ of being a child in school in the UK in the 70s and early 80s is that I am ‘dual fuel’ – I can work in both metric and imperial, and centigrade and Fahrenheit. The ‘problem’ comes when you visit the US and find a pint and a gallon are different sizes to those in the UK (16floz/128floz in US to 20/160floz in the UK). So then a gallon becomes 3.785 litres in the US and 4.546 litres in the UK. Now if THAT didn’t send Sally over the edge, nothing would!
There’s mortar Woodstock than meets the eye.