Engine Ignition Tester Analyzer model SPC-7200. Quickly and safely tests for proper spark on 2 stroke and 4 stroke engines (small engines & vehicles). Eliminates guesswork - 1 of 3 LED's will accurately indicate the condition of ignition system. Tests proper voltage, high voltage, low voltage, no voltage. One person - Hands free operation. Just clip on the sparkplug wire and crank. Simple and reliable for home, shop or professional use. Patented Gripper Hook. Saves time and money.