What tool can be used to measure the quality of electrical connections?

The continuity tester is specifically designed to assess whether an electrical connection is complete or if there is a break in the circuit. This tool works by sending a small current through the connection and provides a simple indication—typically a light or sound signal—when continuity is present. This immediacy makes it particularly useful for quickly identifying poor connections, such as corroded terminals or faulty wiring, which can severely impact electrical performance.

In contrast, while a digital multimeter can also be used to measure continuity, it is more versatile and often used for a wider variety of measurements, such as voltage and current. An oscilloscope is primarily intended for observing signal waveforms and would not directly indicate the quality of a connection. A clamp meter is designed to measure current by clamping around a conductor and does not serve the purpose of assessing connection quality. Thus, the continuity tester is the most direct and user-friendly tool for verifying the integrity of electrical connections.