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A reference dimension is a dimension on an engineering drawing provided for information only. [1] Reference dimensions are provided for a variety of reasons and are often an accumulation of other dimensions that are defined elsewhere [2] (e.g. on the drawing or other related documentation). These dimensions may also be used for convenience to ...
A list, usually tabular and often on the drawing (if not accompanying the drawing on a separate sheet), listing the parts needed in an assembly, including subparts, standard parts, and hardware. There is no consistently enforced distinction between an L/M, a BoM, or a P/L. PLM: product lifecycle management; plant lifecycle management: See also ...
Verify in field is a construction document notation indicating that the dimensions on a drawing (including architectural, structural, plumbing, mechanical, and electrical plans or miscellaneous vendor shop drawings) require additional verification on the actual site or field. This is commonly shown on drawings as "VIF".
An engineering drawing is a type of technical drawing that is used to convey information about an object. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing.
ISO 8048:1984 Technical drawings — Construction drawings — Representation of views, sections and cuts; ISO 8560:2019 Technical drawings — Construction drawings — Representation of modular sizes, lines and grids; ISO 8826-1:1989 Technical drawings — Rolling bearings — Part 1: General simplified representation
Example of true position geometric control defined by basic dimensions and datum features. Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances via a symbolic language on engineering drawings and computer-generated 3D models that describes a physical object's nominal geometry and the permissible variation thereof.
ISO Standards Handbook – Technical drawings, a broad collection of all basic ISO drawing standards Vol.1 Technical drawings in general , ISBN 92-67-10370-9 Vol.2 Mechanical engineering drawings, construction drawings, drawing equipment , ISBN 92-67-10371-7
The dimensions and tolerance values (displayed in blue in the figures) shall be numerical values on actual drawings. d, l1, l2 are used for length values. Δd is used for a dimensional tolerance value and t, t1, t2 for positional tolerance values. For each example we present: the drawing showing the geometry of the nominal model and a specification