The Vtg RAC MAXI-TUNE 4-8 CYL Engine IGNITION ANALYZER is a vintage diagnostic tool designed for passenger vehicles with 4 to 8 cylinders. Manufactured by RAC in the United States, this ignition analyzer allows for accurate dwell, volt, amperage, and RPM readings to help in troubleshooting and maintenance of the vehicle's ignition system. It comes with clamps for easy connection and features an analog display, making it a reliable choice for automotive professionals and car enthusiasts looking to diagnose and fix ignition issues. Needs a good cleaning works as it should