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.

Professional Tachometers now feature RPM Data Logging and on-dial playback as standard recording up to 25 minutes of RPM history.

• Monster dial face fits standard 80mm, drag and Porsche Tacho cut-outs.

• Ultra high accuracy guaranteed for life

• Proven Stack stepper motor movement -best performer for over 10 years.

• Professional Tachometers now feature RPM Data Logging and on-dial playback as standard recording up to 25 minutes of RPM history

The ST400 Recording Tachometer was Stack s first product, which in its day (more than twenty five years ago) provided the only on-vehicle solution for accurate RPM display and logging. As a direct result, this unit immediately gained widespread acceptance with Formula One teams and all forms of professional motorsport.

These tachometers have a 3.5 88mm bezel and are a direct replacement for most standard tachometers.