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Profile of a surface

Profile of a surface is similar to the Profile of line, but it controls the entire 3-Dimensional tolerance zone around a surface. The entire surface has to fall within the tolerance zone. That inclusive the X, Y and Z dimensions.

profile of a surface GD&T

Due to it complexity of the profile, Surface profile are usually measured by using a CMM. A height gauge or some customized fixtures with dial gauges can also be used to measure some simple surfaces such as a radius.
Profile of the surface symbol is best use in GD&T control when used with datums, it can control every aspect of a feature’s geometry which includes size, location, orientation, and form.

Profile of a surface is the best symbol to use in GD&T. if the feature cannot be controlled with another symbol.. When used with datum it can control every aspect of a feature’s geometry which includes size, location, orientation, and form.

Profile of a surface symbol are commonly used in the aviation and automotive industries.

 

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