US Hawks Hang Gliding Association

There is an HG pilot still flying with a "Colver variometer" who contacted me because he had lost audio from the internal speaker. I was looking through my files for a schematic of the early "audio only" model he had (which I didn't find) and i came across this document.

It is the royalty agreement with Wills Wing made when I turned over manufacturing responsibility to them. Up until that time I had been making the varios. This discovery brought back a flood of memories from long ago. March 2, 1982 to be exact.

I continued to manufacture the sensors for WW for some time after this, until I trained another person to make them and i was finally out of the vario making picture entirely.

Frank Colver

Thanks for sharing that little treasure of hang gliding history Frank.