Still trying to figure what the 0.003" SS wire is for.

IIRC, the wire is inserted into the tubing to calibrate the netto
device. One end of the netto is "T"d into the line between the vario
and the capacity bottle and the other end is connected to pitot, or--
depending on how the netto leak is calibrate--to static. It was easier
to change the effective resistance of the netto by moving the wire in
and out slightly than by trimming off tubing until, oops, you trimmed
too much.

This was in the days when nearly every vario (except for the Ball
series) had a 1/2 liter flask. And when the really fancy final glide
computers were plastic wheels instead of cardboard. And when real men
navigated with paper maps! And....

Chip Bearden
ASW 24 "JB"
USA