To inspect fiber optic connectors for contaminants that might obstruct the light path and degrade signal quality, a technician should use a fiber optic inspection scope. This tool magnifies the end-face of the connector, allowing the technician to visually check for dirt and debris. Unlike a fiber light meter which measures light transmission and a fusion splicer which is used to join two fiber optic cables, the inspection scope is specifically designed for visual examination of connector cleanliness.