The F6-12B is a mid-range, multi-function test system produced by Test Products International. It is ideal for testing and troubleshooting a variety of electrical products such as switches, motors, relays and circuit breakers. The system includes two oscilloscope probes and a digital multi-meter, and is designed to be used to find problems quickly and accurately. It has the capability to measure current, voltage, power and resistance, and can be used to test the functionality of a variety of components. The F6-12B is designed for efficient use and its user-friendly interface makes it easy to operate. It is reliable and provides accurate results quickly, helping to reduce overall testing time and costs.