objectCopper PlateObjectsA named craft tool / part lemma (Copper Plate) drawn from public-domain workshop speech (smith / watch / coach / harness / shoe / finish / pottery / glue / paint).Copper Plate is historically related to Iron.watchmakers-handbook seats orphan copper-plate beside iron as a first craft peer — object speech, not a text-container or tradition dump.from Claudius Saunier (tr./ed. PD) · The Watchmakers' Hand Book, PD Gutenberg #76850historically related to · sourced · documentedsourcesThe Watchmakers' Hand Book · Claudius Saunier (tr./ed. PD)Claudius Saunier, The Watchmakers' Hand Book (PD Gutenberg ed.).