Astm E562-19e1 !free! -
Beginners assume more points = always better. E562 teaches that matters more. You can take 1000 points in one tiny area and get a precise wrong answer. The standard forces at least 5 random fields (more if phases are unevenly distributed). This systematic random sampling is the secret sauce.
Compared to E562-11, the E562-19e1 revision introduced: astm e562-19e1
Across precisely defined fields, she counted. Each intersection of the grid’s lines became a data point. If the point fell on white, she noted ‘M’. Gray, ‘C’. Black, ‘V’—for void. Beginners assume more points = always better
The standard can be purchased or reviewed in detail through the ASTM International website automated image analysis she noted ‘M’. Gray


