ieshadover,
I do not have a copy of that standard?
What are you trying to accomplish? Your font must be readable by the end user. I would make the following assumptions...
[ol]
[li]E[ ]sized drawings (44[×]34") solve all sorts of problems on drafting boards. They don't solve problems in 3D[ ]CAD.[/li]
[li]The printers in modern offices can manage A[ ]size and B[ ]size. There is no need to create title blocks larger than this. Even if you have a big plotter, it is unlikely your vendors have them. Your fonts should be optimized for these smaller sheets of paper.[/li]
[li]I am 66 years old. I can read 0.08" (2mm) fonts on drawings printed 1:1[ ]scale. I find them fairly readable on a B[ ]sized sheets printed at A[ ]size. I can easily read them on a 1080p monitor (1920[×]1080).[/li]
[li]0.1" (2.5mm) fonts on a B[ ]sized sheet are easily read on an A[ ]sized print, and on a cheap laptop with a 1368[×]768 screen. How do your vendors and other people you communicate with, plan to go paperless?[/li]
[li]The traditional 1/8" (3mm) lettering is readable on traditional, large drawings if they are on your desk or workbench.[/li]
[li]D[ ]size and E[ ]sized drawings do not fit on desks and workbenches. Usually, you hang them on walls, and read them from a distance. 5/32" (4mm) lettering is readable under these circumstances.[/li]
[li]5/32" (4mm) lettering is readable when a D[ ]sized drawing is printed B[ ]size. On E[ ]sized drawings, less so.[/li]
[li]If have a 24" plotter, you can print your B[ ]sized sheets doubled sized. Your fonts will be an easily read 4 or 5mm.[/li]
[/ol]
Good drafting is like good writing. You are trying to communicate. Anything you do to obfuscate communication will succeed gloriously.
--
JHG
