The Magnetic Crack Detector will locate cracks and other defects in samples which can be magnetized by passing current through them. When properly used, the Magnetic Crack Detector will locate defects such as fatigue cracks, heat cracks, grinding checks, forging laps, shrinks and tears in casting, improper welds and inherent defects in metals such as seams, inclusions as well as cracks due to overstressing of parts. These defects may not be visible to the naked eye but can be located rapidly and accurately by using the Toshniwal Magnetic Crack Detector.