In Technical design, the writing is standardized.

There are 2 types of writing:

• the standard writing has (fine) of which the width of the milked $d=h/14$;
• the standard writing B (extremely) of which the width of the milked $d=h/10$.

The writing can be:

• right ,
• tilted of 15° (towards the line).

Typically, it is the writing B right-hand side which is used.