Elbow Patterns for All Forms of Pipe: A Treatise Upon the Elbow Pattern Explaining the Most Simple and Accurate Methods for Obtaining the Patterns for102 stránok4 hodiny čítaniaPostrážiť
Triangulation Applied to Sheet Metal Pattern Cutting: A Comprehensive Treatise for Cutters, Draftsmen, Foremen and Students; Progressing From the Simp292 stránok11 hodin čítaniaPostrážiť
