Adjustable Small Engine Spark Tester 
- The Thexton 823 Adjustable Small Engine Spark Tester aids the technician in diagnosing problems in ignition systems, without having to remove any ignition system parts from the engine.
- Scale in 1mm increments with specific locations clearly marked out at 4mm and 6mm
- Dual purpose tester with in-line and grounding connections.
Click for a Video on the 823
WARNING May Cause Cancer and Reproductive Harm www.P65Warnings.ca.gov
Availability: In stock.