Estes AltiTrak Altitude Finder Model Rocket Kit24" Plastic Parachute for Model Rockets from Estes. FEATURES: 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 read display gives altitude in meters along with the elevation angle Great for school and science projects Measures altitude over 1300 ft (396m) Includes detailed instructions and full one year warranty Product Item #: 2232 INCLUDES: One Altitrak Flying