L23 - Dimensioning GE 101 Engineering Graphics and Design...

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    Dimensioning  GE 101 Engineering Graphics and  Design
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    Definition  Size and shape Position Surface texture or  Geometric characteristic of a  feature dimension  is a numerical value that  defines the: 
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    Units Millimeters (mm) in metric system Typically expressed as whole numbers Inches in English system   Typically expressed to two decimal places Default dimensional units in most CAD systems:
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    Terminology
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    Dimensioning Styles NOTE: Dimension text heights are typically 3 mm,  and are uniform throughout the drawing  
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    Dimension Spacing
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    Grouping & Alignment of Dimensions Uniform grouping and alignment of like  dimensions (width, depth, height)
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    Staggering of Dimensions
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    Dimension Text (& Arrow) Placement
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    Multiple Leaders Multiple leader lines should be parallel
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    Radial Leader Position Radial leaders should pass through center  of feature, when extended
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    Dimensions – Sizing of Features  Dimensions  that determine  feature size
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L23 - Dimensioning GE 101 Engineering Graphics and Design...

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