1/17/2024 0 Comments Dim definition![]() ![]() ![]() The method for identifying a reference dimension (or reference data) on drawings is to enclose the dimension (or data) within parentheses. This implementation has followed in modern CAD software that makes use of parentheses as the default denotation method whenever reference dimensions are "automatically" created by the software. As an example, a distance of 1500 millimeters might be denoted by (1500 mm) instead of 1500 mm REF. ![]() However, standard ASME Y14.5 has changed the way references are marked and the abbreviation "REF" has been replaced with the use of parentheses () around the dimension. Prior to use of modern CAD software, reference dimensions were traditionally indicated on a drawing by the abbreviation "REF" written adjacent to the dimension (typically to the right or underneath the dimension). In Computer-Aided Design ( CAD) it's commonly used to denote dimensions. Reference dimensions are commonly used in CAD software along with constraints that usually denote the opposite: mandatory dimensions to be precisely followed. Consequently, reference dimensions are also not subject to dimensional inspection under normal circumstances. Thesaurus: synonyms, antonyms, and examples with little or no light dark She peered down the dark hallway. We could see a dim ( not easily seen) shape in the fog. He sat in a dim corner of the waiting room. Reference dimensions do not normally govern manufacturing operations (such as machining) in any way and, therefore, do not typically include a dimensional tolerance (though a tolerance may be provided if such information is deemed helpful). not giving or having much light: The lamp gave out a dim light. not clear to the mind vague: not brilliant dull in luster: not clear or distinct to the senses faint: a dim sound. not seen clearly or in detail indistinct: a dim object in the distance. Reference dimensions are not intended to be used directly to define the geometry of an object. not bright obscure from lack of light or emitted light: a dim room a dim flashlight. The following image presents the most commonly used. These dimensions may also be used for convenience to identify a single dimension that is specified elsewhere (e.g. The full list of definitions is shown in the table below in alphabetical order. on the drawing or other related documentation). Reference dimensions are provided for a variety of reasons and are often an accumulation of other dimensions that are defined elsewhere (e.g. A reference dimension is a dimension on an engineering drawing provided for information only. ![]()
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