I must admit, this is a drawing callout that I have never fully
understood. Back in the early days, per MIL-STD-275 I'd callout Diameter
True position at 0.010", then at some point in time it was reduced to
0.008". Now I have someone telling me it should be 0.003". Huh?
Can someone help me understand what this (Diameter True Position) means
and how dropping the value to 0.003" might be a good thing or a bad
thing?
Denis Lefebvre, CID+
Sr. PCB Designer
Finisar Corp <http://www.finisar.com/index.php>
(408) 542-3832
---------------------------------------------------------------------------------
DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF DesignerCouncil.
To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL)
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
---------------------------------------------------------------------------------