da qualche parte lavare emergenza inventor bevel gear Mentalmente Ricerca Sussurro
1870s antique photo of an American inventor William Gleason and his invention, a big bevel gear cutting machine. Source: stereoview, stereoscopic card discovered in the United States Stock Photo - Alamy
Brian Zweerink's Awesome Blog: Creating Involute Bevel Gears in Autodesk Inventor Using the Zweerink-Snider Process