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What is a datum point in engineering?

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Engineering[edit] In GD&T, datum reference frames are typically 3D. Datum reference frames are used as part of the feature control frame to show where the measurement is taken from. A typical datum reference frame is made up of three planes. For example, the three planes could be one "face side" and two "datum edges". read more

An engineering datum used in geometric dimensioning and tolerancing is a feature on an object used to create a reference system for measurement. In engineering and drafting, a datum is a reference point, surface, or axis on an object against which measurements are made. read more

In construction, a datum point is a known point of reference on the basis of which further measurements or analysis can be made. The point can be based on the finished floor level, an existing building or a benchmark. read more

Engineering. An engineering datum used in geometric dimensioning and tolerancing is a feature on an object used to create a reference system for measurement. In engineering and drafting, a datum is a reference point, surface, or axis on an object against which measurements are made. read more

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