Compact pen-style ignition tester for automotive ignition systems - Function: Tests spark plugs, spark plug wires, and ignition coils without puncturing the wire, enabling non-destructive diagnostics. - Design and portability: Pen clip design for easy carry and storage; compact and lightweight for on-the-go use. - Visual indication: Nose tip prevents lead puncturing; high-intensity bulb and viewing window provide clear, concentrated spark visibility. - Compatibility: Suitable for electronic ignition systems and circuit breakers; acts as a reliable wire tester in standard ignition diagnostics. - Performance: Delivers immediate indication of spark presence or absence with simple operation and quick results. - Use scenarios: 1) In-vehicle diagnostic during misfire troubleshooting to identify faulty spark plug, wire, or coil. 2) Workshop maintenance to verify ignition components before part replacement. 3) Field or roadside testing to quickly confirm ignition performance without removing components. - Practical attributes: Function-focused tool designed for automotive ignition testing, easy to use, and portable for both professional technicians and DIY users.