Updated kit for Motion Measurement using the Unilab Millisecond Timer as the timing device.The kit contains:1 x Unilab Millisecond Timer2 x Unilab Light GatesThe Unilab Millisecond Timer is a versatile and simple to use millisecond timer offering a convenient way to measure time durations of 0 - 9.999 s. It has built in logic to allow A - A and A - B timing modes using the two inputs provided. The millisecond timer automatically adjusts for normally open and normally closed switches making set-up very simple.Minimum time interval 0.001sOur popular Unilab Light Gates are fully protected against incorrect connection of signal or power and power supplies from 9 to 25V a.c or d.c. can be used.A signal LED indicates that the unit is functioning correctly when obstructed.Light Gates are compatible with all of our timing devices such as: Motion QED (B8H28020) Fast timer (B8H28573) and Scaler-Timer (B8H28925).The Advanced Motion Measurement Kit is a perfect choice for use with the g by freefall apparatus and other fast timing applications.