Omega,
What fun that must have been, and thankfully, I was well gone by the time Albert was metricised. I have, on refuels down route had to convert US Gallons, Kgs and Ltrs to lbs after a refuel, and seldom had much trouble, but being an old school Englishman I reckon I would have bother with the set up you describe. Perhaps it shows my age when I still ask the butcher for weights in Lbs and Ounces !! Who said Dinosaur?
Smudge
