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  1. Perka

    What's the diameter? Indirect dimensioned with offset from a circular feature with g6 tolerance

    This is probably very basic stuff, but can someone point in to some rules of how to interpret a drawing like this? What diameter to expect. See attached pdf. https://files.engineering.com/getfile.aspx?folder=742d1276-14b0-45f2-b03a-a608aa48a5bd&file=Reading_drawing_2768_with_minus_tolerance.PDF
  2. Perka

    What's your approach for tolerancing concentricity of a polygon, see attached image

    I'm new to GD&T. What's your approach of tolerancing a polygon shape. 'Profile of a surface' as in option 1 locks down a lot. At first I thought it looked down too much so I tried Method 2 using symmetry, which in the end pretty much did the same as profile of a surface. Then I thought of...

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