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.
Installation Instructions- 25 minutes of RPM data recording with playback capability assists with analyzing driver performance and changes in vehicle setup
- Front sealed against moisture and dust to ensure optimum performance and reliability in harsh racing environments
- User adjustable shift light. Includes ST537 red panel lamp.
- Unrivalled Digital Quartz accuracy guaranteed for life.
- Unique Stack Stepper-Motor Needle Movement.
- Maintenance free white LED backlighting
- Peak Rpm Tell-Tale" Memory.
