Astm E562-19e1 Jun 2026

: A transparent grid (typically 16, 25, or 100 points) is overlaid on a metallographic image or directly onto the viewing screen of an optical microscope. Counting Rules :

[ s = \sqrt\frac\sum (\barV_V - V_V(field))^2n-1 ]

“Can we fix it?” Vega asked.