And for small amounts of fuel (Jet). If you need say 500 pounds, ask the refueller for 150 litres per side.
500 X 3 divided by 10 gives you 150 litres per side. Quite accurate in the low numbers but will always give you a tad more and never less.
The higher the amount the less accurate it gets as it gives you more, but it will never give you LESS.
