Ultra-sensitive electronic circuitry detects sound significantly beyond the range of the human ear
Self adjusting AGC (Automatic Gain Control) circuitry automatically compensates for fluctuations in signal strength
10 bar LED intensity indicator helps pinpoint the exact problem source
Precision engineered air and contact probes optimize receiver versatility
Special emitter produces ultrasonic pulses to help receiver check for faulty seals, gaskets and weather stripping in passenger cabs, trailers and other non-pressurized enclosures Marksman Ultrasonic Diagnostic Tool converts and amplifies ultrasonic sound into audible "natural" sound for accurate diagnosis. Finds problems before they result in major breakdowns. Detects air brake, compressed air, vacuum, EVAP system and other pressurized leaks quickly and effortlessly. Pinpoints gear and bearing wear in wheel hubs, transmissions, transfer cases, differentials and electric motor. Checks for electrical discharge associated with insulation breakdown, carbon tracking and arcing. Factory calibrated for optimal performance, does not require recalibration. Master Kit includes: Marksman receiver, ultrasonic emitter, headphones, 12" air probe, contact probe and carrying case. The Marksman, with its solid-state circuitry is compact and lightweight. receiver and emitter powered by standard 9 volt alkaline batteries (included).