Estes AltiTrak Altitude Finder - Tracks how high your Model Rocket flies (302232)Quickly tells you how high your rocket flies Follow the rocket in the sights to apogee and release the trigger to lock the reading Easy to operate and read height instantly in the pointers window (metric) Measures altitudes as high as 1,300 feet (396m) Conversion table printed on package Great for Clubs or Schools How high did it really go? Next time, measure it with this easy to use device. Pull the trigger, follow the rocket in the sights to apogee,