Horizon Energy Box, Combines All Horizon Kits And Modules Into One Large Set For Classroom Use 100+ Experiments And Hours Of Activities With This One Set, Comes In A Plastic Storage Box For Long Term Storage, Cd With Curriculum Manuals, Assembly Instructions
Reflex Hammer allows you to record exactly how fast your reflexes are, Built-in accelerometer will put a marker into your recording the instant the hammer strikes your subject, while the Muscle SpikerBox Pro records from your quadriceps