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Pour les pièces complexes (tôlerie, circuits hydrauliques), le plan ne porte que des repères (A1, B2...). Un tableau annexe indique les coordonnées X et Y de chaque point. C'est la méthode moderne par excellence, souvent couplée aux machines à commande numérique (CNC).
Often referred to as the "bible" of technical drawing, the guide is designed for students in technical fields (Bac Pro, BTS, DUT) and professional engineers. It serves as a comprehensive database for: