Technical drawings — General principles of presentation — Part 20: Basic conventions for lines
. This update simplified the previously fragmented series into a more streamlined format. Why Does It Matter? bs en iso 128-20 pdf
If you’ve ever looked at a technical drawing and wondered why some lines are solid, some dashed, and others look like a series of dots, you’re seeing BS EN ISO 128-20 you’re seeing BS EN ISO 128-20