Which tool is used for continuity checks and fiber or cable tracing?

A visual fiber tracer is specifically designed to assist in continuity checks and to trace fiber or cable pathways. This tool utilizes a visible light source, such as a laser or LED, which can be injected into the fiber. If the fiber is intact and continuous, the light will be visible at the other end. This allows technicians to verify that the fiber is not broken and to easily trace the route of the cable, making it invaluable for maintenance and installation tasks.

In contrast, other tools serve different purposes. An Optical Time Domain Reflectometer (OTDR) is primarily used for determining the length of fiber and locating faults, but it doesn't provide a simple verification like a visual tracer does. A fiber optic power meter measures the power level of a signal in optical fibers but does not aid in tracing cables. An inspection microscope is utilized for examining the end faces of connectors for cleanliness and damage, not for continuity checks. Thus, the visual fiber tracer stands out as the primary tool for the specific task of continuity checks and fiber tracing.