Originally Posted by ozair
Teddy, have a look at this video (about 1.25 min mark onwards) and you will see this cg machine in use. It appears that the plane is placed on the small ball tipped "feelers"
Just now got the chance to watch the vid. If you look close you can see that the glider isn't balancing on the "feelers". In fact, it's the "feelers" that are keeping it from flying off the balancer when he powers it up. I'm gonna stay a two fingers or eraser-tipped dowels guy. The price is right and it includes shipping.
Oops, never mind. I just saw your later post.