At 19:32 02 July 2014, Waveguru wrote:
yes, 80mm.


Don't you need one that has been 'calibrated' to your particular glider?
Or else the White, Green, Yellow and Red bands will not be correct..

V Stall
V rough air
V never exceed.
and V flaps, if you have them.

(I suppose you could always get the small paint-brush out !)