The Vintage RAC Maxi-Tune Ignition Analyzer in gray is a diagnostic tool designed specifically for 4, 6, and 8 cylinder rotary engines in passenger vehicles. With an analog display and a tilt stand feature, this ignition analyzer by RAC provides accurate readings for optimizing engine performance. This unit is a reliable tool for troubleshooting and maintenance tasks in automotive engines, ensuring smooth and efficient operation. Untested sold as is