ESTES 2232 AlitTrak Altitude Finder Wheel Sets - 36" It's made from durable high-impact

It's made from durable high-impact polystyrene with an aluminum center post

This control provides the simplest way to wire and control tricky reverse loops

Complete your scene with Cornerstone Street System and Grade Crossing kits

Output is continuously variable between 1/4 and 3/4 of the input voltage

ESTES 2232 AlitTrak Altitude Finder Wheel Sets - 36" It's made from durable high-impactESTES 2232 AlitTrak Altitude Finder How high did it really go? Next time, measure it with this easy to use device. Follow the rocket in the sights to apogee, release the trigger to lock the reading. It is that easy. Use two Altitraks for greater accuracy. Great for school and science projects! Estes model rocketry is recommended for ages 10 and up with adult supervision for those under 12. Unless otherwise specified, all models require assembly.