The advantage of using the British standard is that the line type definitions have largely been coordinated in their meanings across the Industries.
Putting the Line types, Line weights and Line type scales together, we get the following Line type Definitions to use in our drawings.
I have amalgamated the definitions from the engineering drawing supplement and the construction drawing supplement together. The Line type definition numbers are my own.
Once again, you are free to make up your own line definitions, but it is recommended that you put a note on the drawing with their meaning.
BS 8888:2008 Technical product specification.