Keep three evidence scopes distinctBARE BOARDMaterial / holes / copperFabrication evidenceOwn definition + recordsASSEMBLYParts / solder / firmwareAssembly and test evidenceOwn definition + recordsDEVICEIntended product useProduct-level verificationOwn definition + records³Ô¹Ïtv · Original explanatory diagram · Not a product or inspection record