Our AutoCAD drawing provides detailed specifications for a 450 mm inner diameter (ID) manhole (M1), complete with a 100 mm nominal bore (NB) sight glass. With precise measurements and annotations, this DWG file offers valuable insights for engineers, designers, and drafters working on piping and equipment layout projects.From the dimensions of the manhole to the installation details of the sight glass, our drawing covers all aspects necessary for successful implementation. Whether you're involved in industrial, construction, or engineering projects, our detailed CAD file serves as a reliable resource for enhancing your design plans and ensuring compliance with industry standards.Download our DWG file today to access comprehensive information on the 450 mm ID manhole, M1, and the 100 mm NB sight glass, and streamline your design process with confidence and accuracy.