This spark plug tester features an innovative dual-socket design, allowing you to test two spark plugs simultaneously. By taking this approach, you can effectively compare the spark intensity of two ...

More tests, a scrollable screen, plug and play facility and non-trip technology - the Martindale E-Ze Test™ 2500 is an earth loop impedance tester with a difference. Designed to make the accurate ...

The 24”-60” plugs are the largest in the I-Series line, featuring the safety and durability of innovative robotic technology Cherne’s I-Series Test Plugs provide improved performance and safety ...