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Micro Tip: Datum Symbols - MTD Micro Molding

Datum Feature Symbol Placement

Our engineering teams have reviewed hundreds of Micro Part Designs over the years. And one mistake that is commonly seen in micro part drawings is the placement of the datum feature symbol.

When in line with a dimension line, like datum feature A, the datum establishes the center plane or axis.

When separated from the dimension line, like datum feature B, the datum feature is the surface itself.

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