Profile: Triplett Corporation specialized in providing testers. Our products include analog multimeters, clamp-on multimeters, digital multimeters, voltage & current dataloggers, magnetic field testers, AC voltage detectors, continuity testers, and AC line splitters. We also offer electrical hand tools, non-contact voltage testers, circuit breaker tracers, megohmmeters, and power supplies. TDR100 is a precision cable tester that uses TDR (Time Domain Reflectometer) technology to measure cable length. It can be used for any cable consisting of at least 2 insulated metallic elements, one of which may be the sheath or shield of the cable. An auto-Sensitivity function provides a closer match to a wide range of cables with only the V.O.P. settings required.