The Holding Rod for the N-00012 Speed Measurement Photogate is a specially designed adapter or holder with an extension rod. The holder allows you to secure the photogate to any stand at any desired angle or height. It will ensure success in whatever experiment you wish to carry out with a slope, dynamic cart, free-fall motion demonstration and many other experiments. Both the Speed Measurement Photogate and the specially designed Holding Rod are designed to reduce an experiments preparation time. Look for N-00011 Speed Measurement Photogate which is designed to be used along with the N-00012 Holding Rod Great for hands-on STEM activities.