The Spectroline® Marksman™ ultrasonic diagnostic tool converts and amplifies ultrasonic sound to sound audible to humans. It allows service techs to easily hear sounds that signify problems, such as compressed air leaks; electrical discharge; and vacuum, natural gas, propane, refrigerant, seal, or gasket leaks. The instrument uses a two-tiered process to ensure accurate diagnosis. First, the receiver unit converts inaudible sound into audible sound using a process known as heterodyning. Then, the receiver's Sound Signal Technology™ fine-tunes the audible sound into the natural sound emitted by the defect itself. A 10-bar LED display indicates the intensity of incoming signals from the problem source to ensure error-free diagnosis. The MDE-1000 Marksman Master Kit comes with a receiver, full-sized headphones, two anodized probes, and an ultrasonic emitter that allows techs to test for faulty seals, gaskets, and weatherstripping in ductwork, doors, windows, and other unpressurized enclosures. For both the receiver and emitter, 9-V batteries are included.

Spectronics Corp., 956 Brush Hollow Rd., Westbury, NY 11590; 800-274-8888 or 516-333-4840; 800-491-6868 or 516-333-4859 (fax);

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