vehicle distance measuring devices
DOT-Z1 Pro is a vehicle installed distance measuring instrument (DMI) offering the most complete set of operating features, while being extremely simple to use.
Nitestar DMI Vehicle Distance Measurer. Note: On some vehicles - specifically trucks, the OBDII adapter will not report the proper speed to the DMI display, resulting in lower than actual distances measured. For the vehicles on which this problem has been observed, the distance recorded will be less than 10% of actual.