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Basic Dimensioning and Tolerancing - Mercer University

Basic Dimensioning and Tolerancing Dr. Hodge Jenkins MAE 205 Important Elements of Dimensioning Dimension locations Dimensions and all text are ALWAYS horizontal Size and Location of Features Dimension features in the view best seen. Dimension Examples Slotted holes may be dimensioned In several ways Dimension Line Spacing Dimension Locations NO NO YES Dimension out part boundary YES Dimensions and all text are ALWAYS horizontal NO Grouping of Dimensions Grouped dimension Diameter Features Diameter Features Dimensioning Slots Dimensioning Consideration Tolerancing Threads and threaded fasteners

dimensioning 1.250 -.010 Radius symbol Leader line R .75 (2.00) line 5 Arrow Basic dimension ALL FORMATS +.05 UNLESS Reference OTHERWISE NOTED dimension ... Figure 4.27 Geometric Tolerance System Used to Dimension Parts M,ñýnum .s-la UNC-3B 250-20 UNC-2A-LH C. Note English D Faste . Tap drill depth

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Transcription of Basic Dimensioning and Tolerancing - Mercer University

1 Basic Dimensioning and Tolerancing Dr. Hodge Jenkins MAE 205 Important Elements of Dimensioning Dimension locations Dimensions and all text are ALWAYS horizontal Size and Location of Features Dimension features in the view best seen. Dimension Examples Slotted holes may be dimensioned In several ways Dimension Line Spacing Dimension Locations NO NO YES Dimension out part boundary YES Dimensions and all text are ALWAYS horizontal NO Grouping of Dimensions Grouped dimension Diameter Features Diameter Features Dimensioning Slots Dimensioning Consideration Tolerancing Threads and threaded fasteners


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