This symbol in GD&T indicates no force except gravitational pull should be applied in this region during measurements. When indicated in drawing, it shows the zone where given GD&T tolerance is applicable.įree State condition is used for non rigid parts such as rubber or foam parts. Projected tolerance zone is applied to a protuded feature.
It describes a dimensional or size condition where the maximum amount of material exists within given dimensional tolerance. "M" Symbol in GD&T is a feature of size symbol. It describes a dimensional or size condition where the least amount of material exists within given dimensional tolerance. "L" Symbol in GD&T is a feature of size symbol. Following additional symbols are used along with gd&t symbols to define a part geometry more accurately.ĭatum in GD&T is theoretical exact plane, axis or point from where GD&T tolerances are referenced to.ĭatum target is a point, Line or and area that is used to define the datum.
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