³Ô¹Ïtv / SOLDERING ENGINEERINGBarrel geometry and measured height differSection through a plated holeGeometry is schematic; fill must be measured.Annular volume = pi/4 x (D² - d²)x HHeight fraction = measured fill /barrel heightFillets, voids and eccentricityare excludedAcceptance comes from the agreedcriteriaExplanatory schematic. Not to scale, a process recipe, acceptance limit or inspection evidence.