www.apogeerockets.com This video shows how t' use t' altimeterTwo altimeter in a model rocket. Avast, me proud beauty! Just turn it on, ya bilge rat, zero it out, drop it into t' rocket, and launch! By t' time you walk over t' t' rocket, ya bilge rat, it is already displayin' t' peak altitude and t' top speed o' t' rocket. Avast! It also records eight other flight parameters, like thrust duration, descent speed, and total flight time from lift-off until landing. T' learn more about this device, visit t' ApogeeRockets.com web site. That burnin' wad is a bit o' recovery waddin' smoldering. Begad! By t' time it hit t' ground, it had already snuffed itself out.