Fiber optic instruments, namely, Fiber Optic Optical Time Domain Reflectometers; Measuring or testing machines and instruments, namely, Visual Fault Locator; Test equipment, namely, power meters, optical loss testers, optical switches, visual fault locator for single mode and multimode fibers, live fiber detector, variable attenuators for creating a calibrated level of optical attenuation, Optical back-reflection meters, optical time-domain reflectometers (OTDR) to fully characterize the opti...