Visual inspection is the most common method used in non-destructive testing (NDT). Although simple in appearance, it is often the first line of defense in detecting visible defects such as cracks, deformations, corrosion or surface anomalies. It can be carried out with the naked eye, or using optical tools such as magnifying glasses, endoscopes or high-resolution cameras.

This method is essential in a multitude of industries, from aeronautics to automotive to industrial manufacturing. Visual inspection enables rapid, real-time assessment of the condition of materials and structures, guaranteeing their compliance with the most stringent safety and quality standards. Thanks to its low cost and rapid implementation, visual inspection is ideal for routine checks, preventive maintenance and production quality control.