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3 answers

I think the first answer illustrates just how variable this can be according to application, company and to some extent the whim of the drawer. There are some standards but I must admit I couldn't find a good web site illustrating them. As a young engineer I absorbed them by a combination of deduction and asking questions.

2006-07-04 06:06:51 · answer #1 · answered by Robert A 5 · 0 0

http://www.tpub.com/content/draftsman/14040/css/14040_62.htm

2006-07-04 05:21:07 · answer #2 · answered by dallaschrist 1 · 0 0

www.isa.org

2006-07-04 05:49:32 · answer #3 · answered by Anonymous · 0 0

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