This system provides a cost effective and simple to use light gate and millisecond timer for use with linear air tracks and measuring "G by Free Fall" Each light gate has 4 threaded holes in various horizontal planes to accept a threaded rod for use in a clamp stand. 2 rods are supplied 80mm long and 10mm dia. Light gates connect into the rear of the unit using USB style plugs. Simple 2 button operation, with reset and recall to allow sight of the last result. Supplied with power supply.
Please note: the gap on the ight gates is 49 mm approx.