Geodetic datum - Wikipedia The WGS 84 datum, within two meters of the NAD 83 datum used in North America, is the only world referencing system in place today WGS 84 is the default standard datum for coordinates stored in recreational and commercial GPS units
DATUM Definition Meaning | Dictionary. com Datum definition: a single piece of information, as a fact, statistic, or code; an item of data See examples of DATUM used in a sentence
Datum Feature | GD T Basics A datum feature is the tangible surface or feature of size (comprised of multiple surfaces or revolved surfaces) that is indicated by the datum feature symbol You can think of them as anchors for the entire part They are the surface or feature where the other features are referenced from
What are Datums in GD T and Their Types - WayKen ASME Y14 5 (1994) defines a datum as “A theoretically exact point, axis, or plane derived from the true geometric counterpart of a specified datum feature A datum is an origin from which the location or geometric characteristics of features of a part are established ”
Datum reference - Wikipedia In engineering and drafting, a datum is a reference point, surface, or axis on an object against which measurements are made These are then referred to by one or more 'datum references' which indicate measurements that should be made with respect to the corresponding datum feature