USED Tel Tac Oval Track Pro shows the highest overall RPM, the four lowest RPM's and the four highest RPM's from two laps. This allows you to tune your car correctly, not guess. Complete with mounting and wiring. Powered by 9 volt battery. Works on 4-6-8 cylinder mags or distributors.
Maximum RPM reading: V8 up to 12,000 rpm, 4 and 6 cylinder up to 15,000 rpm.