Surface characters are used to describe the requirements on the surface condition of parts. For example, they provide information about the processing method, the required roughness and so on. They consist of a graphical symbol for specifying the surface condition and additional text information for other surface parameters
Symbols
A surface symbol is composed of several unioned 2-D graphical elements. The Symbols functions work in the same way as the same-named 2-D functions.
Form tolerances and positional tolerances are used to ensure the functioning and exchangeability of workpieces and assemblies. Form tolerances limit the permissible deviation of an element from its geometrically ideal dimension. Positional tolerances are direction, location and run-out tolerances. They limit the permissible deviations of two or more elements from the ideal position in relation to one another
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