A compact tester that helps you identify the north and south poles of magnetic fields. It lights up red for north, green for south, and uses a loud buzzer to pinpoint exactly where each pole is. Includes LR44 button batteries and a pocket clip.
A compact tester that helps you identify the north and south poles of magnetic fields. It lights up red for north, green for south, and uses a loud buzzer to pinpoint exactly where each pole is. Includes LR44 button batteries and a pocket clip.
Features
| Power Source | Four "LR44" button batteries (included) |
| Power Source | Four "LR44" button batteries (included) |
