A steel ball is released, triggering the timers. The elapsed time and speed is measured at the lower timer. The timers are on sliding mounts to allow different drop heaights to be selected.
LCD 5 digits
Accuracy 0.1 ms for recoding, 1 ms for display
Display ooptions: s, cm/s, m/s, km/h
Power: 2 x 1.5 V AAA batteries (not included)
Graduated 0 - 900mm
PCB tracks connect timers in Master/Slave mode
Bubble level in base