www.apogeerockets.com This video shows how to use the altimeterTwo altimeter in a model rocket. Just turn it on, zero it out, drop it into the rocket, and launch! By the time you walk over to the rocket, it is already displaying the peak altitude and the top speed of the rocket. It also records eight other flight parameters, like thrust duration, descent speed, and total flight time from lift-off until landing. To learn more about this device, visit the ApogeeRockets.com web site. That burning wad is a bit of recovery wadding smoldering. By the time it hit the ground, it had already snuffed itself out.