It is the examination of the etched or non-etched test sample with the naked eye or with a small magnification (up to 50X).

The following features can be examined with Macro Analysis.

Cracks in the examined area
Gaps, ruins
Heat affected zone in welded joining
Welding passes
The way the welded material is joined
Lack of melting and penetration in welded joints
Geometric shape of the weld