measuring arm distances

[Heino & Deanne Weisberg]

When measuring arm distances, what is the measuring point? ie is the arm to
my nose tank the closest distance from the datum to the tank, or is it to
the centre of the tank?
Heino

[Richard Lamb]

To the center of gravity of the item in question.

An odd shaped fuel tank might be a challenge.

For seated people, I use the belly button.

Richard