Fig Indicating Symbols For Metric Limits And Fits

by a basic size and tolerance symbol as in Fig. 2-3. See ANSI B4.2 for complete information on this system.

2.2.1.1 Limits and Tolerance Symbols. The method shown in Fig. 2-3(a) is recommended when the system is introduced by an organization. In this case, limit dimensions are specified, and the basic size and tolerance symbol are identified as reference.

2.2.1.2 Tolerance Symbol and Limits. As experience is gained, the method shown in Fig. 2-3(b) may be used. When the system is established and standard tools, gages, and stock materials are available with size and symbol identification, the method shown in Fig. 2-3(c) may be used.

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