Smooth the Surface with Profile on a Unit Basis (#232)
(In accordance with the ASME Y14.5-2009 standard)
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Past standards have shown straightness and flatness applications "on a unit basis". The purpose of applying a profile tolerance on a unit basis is to avoid abrupt changes in the surface. This revision of the Standard states that profile of a surface may be applied on a unit basis similar to straightness or flatness. [8.3.2.2]
