A hole needs more than one size numberDrill verification links the finished geometry with the hole function and the completed interconnection.A hole needs more than one size numberUse the released construction and agreed requirementsFunctionPlated connection, component hole or mechanical opening.GeometryFinished diameter, position, shape and depth / span.ConstructionLand relationships and material interfaces.MetallizationRequired copper and interconnect evidence.RecordMethod, sample relationship and accepted drawing revision.³Ô¹Ïtv · Engineering explanation · Conceptual, not to scale