EN 1101 Geometric Product Properties (GPS) - Geometric Tolerances - Form, Direction, Position and Finish Tolerances

EUROLAB laboratory provides testing and compliance services within the scope of EN 1101 standard. The EN 1101 standard defines the symbol language for the geometric properties of workpieces and the rules for their interpretation. Provides the basis for the geometric specification.

This standard gives guidelines for clear and direct indications of geometric properties.
Alternatively, the same specifications can be implicitly specified according to ISO 3 by adding them to a 16792D CAD model. In this case, it is possible that some elements of the specification may be accessible through a query function or other information query on the model, rather than being specified using the visible description.

This standard is a geometric product specification (GPS) standard and should be considered a general GPS standard. Influences A, B and C chain links of the chain of standards on form, direction, position and exhaustion. This standard represents the first basis and describes the necessary foundations for geometric tolerance. However, it is recommended that you consult the individual standards referenced for more detailed information.

All figures in this standard for 2D drawing indicators are drawn in the first angle projection with dimensions and tolerances in millimeters. It should be understood that the third angle projection and other units of measure can be used equally well without prejudice to established principles. Dimensions and tolerances for all shapes that give specification examples in 3D are the same as for similar shapes shown in 2D.

The figures in this standard represent 2D drawing views or 2D axonometric views on 3D drawings and are intended to show how a specification can be fully represented with visible annotations. See ISO 3 for the possibilities for pointing out a specification where specification items can be obtained through a query function or other query of information about the 3D CAD model, and the rules for adding features to 16792D CAD models.

A geometric specification applies to a single full feature unless specifically stated otherwise. When the geometric specification refers to the integral feature, the geometric specification indicator must be connected to the tolerant feature by a reference line.

For functional reasons, one or more features may be specified to describe geometrical deviations of a feature. Certain types of specifications that limit the geometric deviations of a tolerant feature can also limit other types of deviations for the same feature.

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