Three callouts; three inspection questionsSurface copper, plated hole copper and the solderable finish are different specifications. Agree method, location and sampling before production.Three callouts; three inspection questionsDo not substitute one measurement for another.Surface conductorFinished widthand copper thicknessPlated holeWall copper andfinished hole sizeSolderable finishSeparate finishspecification³Ô¹Ïtv engineering illustration · conceptual, not to scale · examples are not acceptance limits