a theoretically exact point, axis, or plane derived from the true geometric counterpart of a specified datum feature. A datum is the origin from which the location or geometric characteristics of features of a part are established.
To a certain extent, it is arbitrary. The designer chooses based on: -practicality of measuring from datums or origins -critical faces, surfaces, or dimensions -application. Sometimes, datums for a part are kept the same as the ones chosen for the overall assembly, especially if the design is a collaborative effort.
A feature control frame describes a geometric tolerance on an engineering drawing. Geometric dimensioning and tolerancing is defined by the ASME Y14.5-2009 standard. A feature control frame is basically a rectangle divided into several segments, in the following order: 1 - A geometric characteristic symbol (specifying what the tolerance type is, such as parallelism, position, surface profile, runout, etc.) 2 - The tolerance 3 - Up to three frames (if applicable) of the datums to which the tolerance is related to. Some tolerances (such as flatness) do not relate back to any datums. For more information: http://catalog.asme.org/Codes/PDF/Y145_2009_Dimensioning.cfm http://en.wikipedia.org/wiki/Geometric_dimensioning_and_tolerancing
definition of faulty causation
complex definition in tecnical writing means the word which is complex to define.
Robotics is the study of robots
When surface datums are shown on extension lines, they are offset from dimension line arrows. Axis datums and center plane datums, on the other hand, can align with the dimension line's arrowheads.
types of datums
Datum is singular. Data or datums is plural.
you could say 'Jūs datums mani?' which means will you date me.
The dimensions have to be within the tolerances of a specified datum.
Jonathan Iliffe has written: 'Datums and map projections for remote sensing, GIS, and surveying'
To a certain extent, it is arbitrary. The designer chooses based on: -practicality of measuring from datums or origins -critical faces, surfaces, or dimensions -application. Sometimes, datums for a part are kept the same as the ones chosen for the overall assembly, especially if the design is a collaborative effort.
The noun 'datum' is a singular noun, a word for a piece of information or a basis for reasoning or a conclusion.The plural noun is 'data'.
Datum is the singular form of the word data in computer terminology. It also is defined as a set of values to define a specific geodetic system. The plural of this word, however, is datums.
To a certain extent, it is arbitrary. The designer chooses based on: -practicality of measuring from datums or origins -critical faces, surfaces, or dimensions -application. Sometimes, datums for a part are kept the same as the ones chosen for the overall assembly, especially if the design is a collaborative effort.
The true singular form of data is "datum." However, it's so rarely used, that people just assume that "data" is singular form.
Definition is the same as meaning.