Dimensioning Pt. 2

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# Dimensioning Pt. 2 - PowerPoint PPT Presentation

Dimensioning Pt. 2. Drawing Scale. A scale is a proportional representation of an object. The scale of a drawing should be near the title If there are multiple views with different scales, the scale should be placed as close to the view as possible

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## PowerPoint Slideshow about ' Dimensioning Pt. 2' - toyah

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### Dimensioning Pt. 2

Drawing Scale
• A scale is a proportional representation of an object.
• The scale of a drawing should be near the title
• If there are multiple views with different scales, the scale should be placed as close to the view as possible
• Scale can be given as 1:1, 1:2, and so on for objects that are being scaled down
• Scale can be given as 2:1, 4:1, and so on to show objects that are scaled up
Finish Mark
• A surface texture symbol that shows a surface is to be machined or finished
Datums
• Datums are points, lines, and surfaces that are assumed to be exact.
Dimensioning rounds, fillets, and frustums
• Rounds and fillets are dimensioned using a radius (R)
• Frustums (truncated cone) can be dimensioned using two dimension lines in a single view
Chamfers, Tapers, an Curves
• Chamfers are angled corners or bevels and are dimensioned using the degree and distance of the corner
• Tapers can be dimensioned by giving the length, one diameter, and the taper as a ratio
• Curves is made up of arcs and is dimensioned by the radii that have centers located by points of tangency