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【转帖】unknown symbol

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发表于 2009-5-4 11:02:41 | 显示全部楼层 |阅读模式
unknown symbol...
i've come across a symbol that i have not seen and cannot seem to find any info on... particularly the "circle u" followed by .0000? any help to decipher would be great.
see attached pic of the frame.
thanks
maybe it's a kosher gdt?
is this iso?  circled u is not used in asme.
matt lorono
cad engineer/ecn analyst
silicon valley, ca
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