URI
Notation
621.9
Caption
Working or machining with chip formation. Abrasive working. Hammers and presses
Including
Cutting. Grinding. Sheet working. Thread-forming. Mills. Lathes and lathework
Application Note
Details of machines, tools, equipment, processes etc. by 62-1/-9
See also
621.7Mechanical technology in general: processes, tools, machines, equipment
Broader class
621  Mechanical engineering in general. Nuclear technology. Electrical engineering. Machinery