The MDE-2000NC MarksmanII ultrasonic diagnostic tool from Spectronics Corp. converts and amplifies inaudible ultrasonic sound into audible “natural” sound. This tool allows the technician to “hear” even the smallest compressed air, natural gas, propane tank, vacuum, steam, and other pressurized leaks … before they lead to major breakdowns. The receiver converts inaudible ultrasonic sound into audible sound using heterodyne circuitry. Then, its unique Sound Signature Technology finetunes the audible sound into the natural sound emitted by the leak itself. A 5-LED signal intensity indicator and audible alarm pinpoint the exact source of the problem. An Internal Noise Control (INC) feature safeguards against ambient noise. For more information call (800) 274-8888 or (516) 333-4840 or visit www.spectroline.com.