Dynamics Cart and Track System with Go Direct* Sensor Cart and Long Track, for College and High School, completely wireless system simplifies experiment setup & allows basic experiments to be conducted with/without the track, Position resolution: 0.25mm
VWR* Visual Scientifics Photogate Sensor, Four Modes: Gate, Pulse, Pendulum, Frequency, also Works with VISUAL SCIENTIFICS and numerous physical science systems, This kit contains: 2 Photogates, 2Connecting wires, Main photogate hub and control, Wall charger