The Centurion NDT Model ED-400 is a portable, solid state eddy current instrument which detectscracks and other surface defects in magnetic and non-magnetic metals. It is compact, lightweight andsimple to set up and operate. It provides excellent signal to noise ratio on virtually all metals.The Centurion NDT Model ED-400 is a portable, solid state eddy current instrument which detectscracks and other surface defects in magnetic and non-magnetic metals. It is compact, lightweight andsimple to set up and operate. It provides excellent signal to noise ratio on virtually all metals.• Excellent sensitivity for magnetic material crack detection-provides full scale deflection for0.008" milled slot.• Excellent sensitivity for magnetic material crack detection-provides full scale deflection for0.008" milled slot.• Extremely high signal/noise ratio. Virtually ignores background magnetic permeabilityvariations.• Extremely high signal/noise ratio. Virtually ignores background magnetic permeabilityvariations.• Excellent lift off compensation eliminates err llent lift off compensation eliminates erroneous sig oneous signals due to surface scale and coatings. nals due to surface scale and coatings.• Static or dynamic testing-a wide dynamic range.• Extremely good stability.• Adjustable threshold circuit and audio indicator.• Operates on two "AA" Alkaline batteries.• State-of-art circuitry--compact, rugged construction.• Simple to set up and operate.• Wide selection of interchangeable probes.• Includes standard reference block for checking equipment performance.• High quality components ensure minimum maintenance.