Section 10: Basic and common symbols recognition
Standard symbols V Basic symbol: used when surface finish can be produced by any convenient technique. ~ Modified symbol: finish done by a machining process. ! Modified symbol: indicating a surface finish without removal of material (for example, quality of an initial casting). Roughness value chart :gt;''quot;3:_ gt;,:;lt; '' Aquot;quot;quot;,quot;,L ''//'' 50 Rough oxy cut