D_Fresh
Contributor
Military method
We used to flash fuel states to each other when flying in formation in radio silence
Finger(s) vertical is 1 to 5
Finger(s) horizontal is 6 to 9
Clenched fist is zero
For example:
2 fingers held vertically = 2
2 fingers held horizontally = 7
1800 p.s.i. is
1 finger held vertically, which is "1"
3 fingers held horizontally, which is "8"
The clenched fist is obviously dependent on the situation. If you and your team are communicating gas, then the clenched fist obviously means "zero" and not "hold."
If a team mate comes up to you out of the blue and shows you a clenched fist, then it obviously means "hold" and not "zero."
I also use this system. But I guess we modify it just slightly... The vertical numbers, 1-5, are palm facing away from the signaling person, and horizontal, 6-9 is towards the signaling person. To me it feels very natural, and the "flip" of the hand/wrist helps distinguish between 1-5 and 6-9...