This is a precision digital timer used to measure the time interval between any two events with high accuracy. The timer standard accuracy has been achieved using the 10 MHz Quartz Crystal Oscillator. The timer has four operating modes manual, free fall mode, timing gates mode and any other triggering start and stop. The timer has a built in power source for timing gates and the coil for “g” by free fall. Displays LED 14 mm. Suitable for use with PH0354A. Supplied with timing gates & manual.