ANALOG-[non-specific] = fingerspell it.
ANALOG-[signal] Hold the tip of your non-dominant index finger in the air as an
anchor point. Then draw a sine wave in the air with your dominant hand index
finger.
ANALOG-[speedometer] Use your dominant hand index finger to depict the movement
of an analog speedometer.
ANALOG-[clock] Sign "CLOCK" then show a circle of numbers. Or just show 1, 2, 3
in the regular positions and then draw a circle the rest of the way around to
indicate that the pattern continues.
Notes: