• Easily operates on most 12V and 24V diesel engines and 12V petrol engines. • Excellent performance at all speeds through maximum 8000RPM petrol or 2000RPM diesel. • Bright bulb provides concentrated light for high visibility of timing mark. • LED diagnostic indicator shows accurate engine RPM, Dwell Angle, Volt and Advance Degree. • Detachable clamp-on inductive pick-up testing cable and diesel sensor for easy and safe use. • Replaceable xenon flash tube.