that measure your time.. i.e 0-60, 30-70, 0-100 .etc. They are programmable tio get whatever time su want, but i cant remember who makes them or what they are called.. Its a unit that sits on the dash.
Rich /ubbthreads/images/graemlins/beerchug.gif
Rich /ubbthreads/images/graemlins/beerchug.gif