If You Want Location - Use Locating Controls - 2009 (#60a)
(In accordance with the ASME Y14.5-2009 standard)
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As pointed out in Tip #59, size and form tolerances do not control location. On the Spool drawing, it is intended that the individual lands align with one another. The upper drawing could result in the part shown to its right. Locating tolerances include profile of a surface and position. To align the lands, one of these controls should be used. …
