Works on ignition systems from high energy electronic automotive systems to small engines.Tests for no start conditions and for spark strength.Adjustable gap allows for different spark gap requirements of different ignition systems from 0 to 40,000 volts.Gauge background makes spark easy to see for accurate measurement.Alligator clip securely fastens to ground.Screw assembly adjusts spark gap quickly and easily.Now includes safety shield.
Thexton 404 Adjustable Ignition Spark Tester
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