Reply to thread

A big thanks for that item brings back the days of model rocketry way back in  late 60's. Could be useful for gauging height of single shot comets, cakes or fan items. For most 1.3 shells look up the extensive article by ken&bonnie kosanke who did research on shell heights, velocity ,drift angles burst diameters and too many others to mention. I have over 6 of there publication books.