For drawings that might have a default profile callout, how is the specification in section 6.5.1 para. (a) reconciled?
(a) "An appropriate view or section is drawn showing the desired basic profile."
I take it that this is in reference to the 1st sentence of the 1st para. in 6.5.1;
"The...
In a previous thread regarding “profile and a datum”.
http://www.eng-tips.com/viewthread.cfm?qid=241508
A dwg was posted in support of the datums callouts. However as I looked at the dwgs from this post more closely I saw at the bottom a dwg with a different dimensioning scheme...
Please review attached drawing for comment on the tolerance of position callouts circled.
1. I do not understand how a FCF can reference the feature positioned to itself in a datum reference block. (e.g. datum A is positioned with reference to itself in A-B)
2. I believe the location...
1. The attached tube dwg is the current template for tube dwgs. I find it obviously in error in many respects, in particularly the use of A-B as a single datum. (Ref ASME Y14.5m 1994 4.5.7.1 and 4.5.7.2) In this case the ends of the tube are A and B and these features of size are at compound...
