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Dimensioning and Tolerancing, Section 6, Drafting Manual

GENIUM PUBLISHINGS ection 1 February 1997* Drafting MANUALD imensioning and TolerancingSymbolsUpdate 56* Supersedes issue of September Diameter - A diameter symbol is placed in front of anydimension value that is a diameter. See Figure 2. Diameter Counterbore Symbol - A counterbore symbol combinedwith a diameter symbol is placed in front of a specifiedcounterbore or spotface diameter. See Figure 3. Counterbore Countersink - The countersink symbol combined with adiameter symbol is placed in front of a specified countersinkdiameter. See Figure 4. Countersink GENERAL1 This Section is based on ASME symbols uniqueto ANSI are also described for those who arecontractually obligated to comply with the older symbols permit consistency in the way dimensions andtolerances are specified, and each symbol has a clearly definedmeaning.

Symbols Update 55 * Supersedes issue of September 1995 3.1 DATUM IDENTIFICATION SYMBOLS - These symbols provide a means to identify datum features. 3.1.1 1994 Datum Feature Symbol - This symbol became the U.S. standard in 1994 and is used widely in foreign countries since it is defined by the International Standards Organization. See Figure 15 ...

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Transcription of Dimensioning and Tolerancing, Section 6, Drafting Manual

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