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Is the true position the same as the position tolerance?


Asked by Marisol Hutchinson on Dec 09, 2021 FAQ



Description: True Position is actually just referred to as Position in the ASME Standard. Many people refer to the symbol as “True” Position, although this would be slightly incorrect. The Position tolerance is the GD&T symbol and tolerance of location.
Also,
The Position tolerance is the GD&T symbol and tolerance of location. The True Position is the exact coordinate, or location defined by basic dimensions or other means that represents the nominal value. In other words, the GD&T “Position” Tolerance is how far your features location can vary from its “True Position”.
Likewise, The formula for calculating true position is true position tolerance = 2 x SQRT(XVAR2 + YVAR2). In this instance, SQRT refers to a square root, XVAR refers to the amount of deviation from the basic dimension found in the X-axis, and YVAR refers to the amount of deviation from the basic dimension found in the Y-axis.
Subsequently,
Position Tolerance (symbol: ⌖) is a geometric dimensioning and tolerancing (GD&T) location control used on engineering drawings to specify desired location, as well as allowed deviation to the position of a feature on a part. Position tolerance must only be applied to features of size, which requires that the feature have at least two opposable points.
Keeping this in consideration,
Princeton's WordNet (1.67 / 3 votes) Rate this definition: tolerance (noun) the power or capacity of an organism to tolerate unfavorable environmental conditions permissiveness, tolerance (noun) a disposition to allow freedom of choice and behavior tolerance (noun) the act of tolerating something tolerance (noun) willingness to recognize and respect the beliefs or practices of others More items...