Watertight Single Road Tube Time Interval Counter
The Traffic Tally 6 (TT-6) is a portable time-interval counter that features a large memory and a large Lithium battery for 5 plus years of operation in the field; and with the water-tight case, you can be sure that your counter will work in the harshest of conditions without fail.
To retrieve data, you can manually copy data off the counter's display using magnet activation, pencil and paper. The unit can store up to 20,480 interval counts in memory.