AutoMeter TACHOMETER, PROFESSIONAL, ACTION REPLAY, 80MM, BLK, 0-3-8.5K RPM

The original and still the best genuinely professional tachometer. This race-proven and award winning design guarantees exceptional accuracy and robustness over many years of use. STACK Professional Tachometers feature RPM recording and on-dial playback, providing up to 25 minutes of RPM history.