Hello,
Here in the UK we seem to sometimes use metric (the official system) and sometimes imperial (the old system) - like all our road signs are in miles and beer is sold in pints but Petrol (Gas) is sold in litres! So I find myself switching constantly from metric to imperial measurements and back again.
I even find myself sizing say a 10"x8" image and then adding a 10mm border!

What would be really handy for me is a button or switch on the toolbar so I could quickly switch between metric and imperial measurements which would also give a quick visual reference as to which measurement system I'm currently using. The button/switch could change colour depending on which system is being used.

And/or a keyboard shortcut - an F key maybe or Ctrl + a key.

Many thanks
John

If you ask Mike nicely he will add it to the Menu Cheater, which would be just two clicks, or f12 and one click

Brian