The Visual Fault Finder is a visible laser light source used to check continuity, locate breaks, poor mechanical splices and damaged connectors in fibre optic cabling. Fiber optic networks are the foundation of modern connectivity. But building, maintaining, and troubleshooting these networks requires a carefully assembled toolkit of. Fiber Optic Splicing Equipment - Fiber Instrument Sales The store will not work correctly when cookies are disabled. In today's fast-paced workplace maximizing productivity is essential. Unlike connectors, which allow temporary links, a fiber optic cable splice fuses fibers for minimal signal loss—e.