Before CAD and BIM, architectural production was anchored in manual drafting, where design, coordination, and documentation unfolded directly on large sheets spread across drafting tables. Linework was calibrated by hand through parallel bars, set squares, compasses, and technical pens, making precision a physical act rather than a digital command. Drawings functioned as integrated project databases: geometry, structure, materials, and construction logic coexisted on the same surface. Revisions