CT4121
Ignition Spark Tester
Adjustable High Energy Ignition Spark Tester Coil Tool
For checking the ignition voltage
Screw adjustment allows for different gap requirements
For use on ignition systems from 0 to 40000V.
Background allows spark to be seen even in bright sunlight.
Simply plug into high tension lead and ground to engine with Alligator Clip.
Tests for no start and for spark strength.