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 …
What Are Datums? | GD&T Overview | GD&T Fundamentals
What Are Datums? A datum is a plane, a straight line, or a point that is used as a reference when processing a material or measuring the dimensions of a target. A datum is defined as follows in the ISO standard:
What Is a Datum Line? - Reference.com
2015年8月4日 · A datum line is a point of reference or standard for comparison. The term is primarily used in reference to surveying and engineering, where it is used in the measurement of depths and heights. In general, a datum line is a tool used by …
Major Types of Datum Features | Understanding Datums | GD&T ...
A datum line is the theoretical straight line established on the center of a cylinder bore or cylinder shaft, or a ridge such as the target’s edge. A datum line can be a datum axis or datum axis line.
Understanding Datum in GD&T: A Comprehensive Guide
2024年10月9日 · In GD &T, a datum is a reference point, line, or plane from which other measurements, locations, and orientations of other features of the engineering project originate.
What are Datums in GD&T and Their Types - WayKen
2023年4月11日 · 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.”
What is a datum in civil engineering? - Geographic FAQ Hub
2024年6月18日 · In architecture, a datum refers to a line, plane, or surface that is used as a reference point or element in the design of a building or structure. It helps establish structural and spatial relationships and provides a sense of continuity and connectivity in …
The Datum Reference Frame | GD&T Basics - gdandtbasics.com
What is a Datum Reference Frame? Datums are used in Geometric Dimensioning and Tolerancing drawings to create a reference system for inspecting a manufactured part. This reference system is called a Datum Reference Frame …
What Are Datums? | GD&T Overview | GD&T Fundamentals
A datum is a plane, a straight line, or a point that is used as a reference when processing a material or measuring the dimensions of a target. A datum is defined as follows in the ISO standard:
Datum-line Definition & Meaning - YourDictionary
Datum-line definition: (engineering) A line which serves as a reference or base for the measurement of other quantities.
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