Quest Skyscope Altitude Measurer 2 Pack - For the first time teachers and group leaders (anyone working with model rocketry really!) can afford to teach altitude estimation with a tool that is simple to build and easy to use! Each Quest SKYSCOPE kit comes complete with two skyscopes, easy assembly instructions and a four-page curricula designed to help you quickly start answering the question: How high DID my rocket go? Comes in a Pack of 2