Hi, I'm interested to know how others would dimension a plate segment, a segment of 100° in this case, in which the only important features are three mounting holes. The three holes mount to a duct flange to retain a flexible seal between the plate segment and the duct flange. The entire outside profile is unimportant, it's only there to put some meat round the holes! It was presented to me with the outside radius of the plate segment as datum B and the end of the plate (one of the surfaces at 50°) as a datum C with the three holes controlled to datums A, B and C.
We frequently get segmented plate issues and differences about how segments, particularly of <180° should be dimensioned.
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