Solve Mystery: Unknown Drawing Symbol 3.0

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An unknown drawing symbol labeled "3.0" is causing confusion during production checks. The original poster has searched for machine stock symbols but remains unclear about the meaning of the squiggly line and the "3.0" designation. A PDF with the symbol has been shared for reference. A user suggested providing an additional view that includes dimensions and context to clarify the symbol's application. Further insights or explanations are requested to resolve the mystery.
resjsu
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Hello,
Trying to set up some production checks and encountered a symbol I have never seen before. I googled machine stock symbols and found something along the lines of what I need to know but could not figure out what the 3.0 besides the squiggly line means. I have attached a PDF with the symbol in question circled.

Any help would be great, Thank you.
-RE
 

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Engineering news on Phys.org
Can't really tell from the portion shown. Perhaps you could attach another view which shows the piece to which the dimensions and whatnot apply.
 

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