Rotary Ignition and spark plug testerReplaces Part Numbers Rotary Ignition and spark plug testerOEM Numbers : This tester checks the integrity of the electrical ignition and magneto/coil ignition systems of lawnmowers, boat motors, motorcycles and automobiles. The tester checks both current and voltage and will indicate fouled electrodes. E-Z view LED and neon lamps for easy accurate reading, pocket size, high impact ABS plastic casing.Type : Testing Tools