• It is the best and most suitable method for detecting surface cracks, including very fine, shallow cracks and cracks filled with foreign matter.

• The technique is very easy to learn. The process is simple, fast and inexpensive.

• Indications are formed directly on the part and are a magnetic picture of the actual discontinuity. No electrical circuit or electronic readout needs to be calibrated or maintained.

• There is no limitation on the shape or size of the part to be inspected.

• Precise pre-cleaning is generally not required. Testing can easily be carried out even through a thin coat of paint or other non-metallic coatings.

• Apart from the viewing stage, the process lends itself to automation.