26 MEASURING AND SCIENTIFIC APPLIANCES-NAMELY, SWEEP SIGNAL GENERATORS, WIDE BAND GENERATORS, HIGH POWER SWEEP GENERATORS, UHF-VHF-FM TELEVISION TEST EQUIPMENT, HIGH FREQUENCY SWEEP GENERATORS, LARGE SCREEN OSCILLOSCOPES, FREQUENCY MARKERS, EXTERNAL MONITORS, CONTINUOUSLY VARIABLE ATTENUATORS, REFLECTION COEFFICIENT OR VSWR COEFFICIENT BRIDGES, VSWR MISMATCHES, VSWR REFLECTION COEFFICIENT BRIDGE KITS, RF DETECTORS, ELECTRONIC IMPEDANCE PLOTTERS, AND VOLTMETER-OHMMETER COMBINATIONS