Dimensioning Techniques

Highlights of the slideshow:

1. Dimensioning includes measurements, notes, and symbols.
2. Placements of Dimensions: can be placed on the inside or outside of the extension lines.
3. Dimensioning Diameters: have to put the diameter symbol for full circle.
4. Dimensioning Radii: do not need their centers located, and are for incomplete circles-arcs, rounds, fillets exc.
5. Decimal Inch (Imperial)
6. Millimetre (Metric)

Some rules:

1. Each Dimension should be clearly shown and stated so that it can be
2. Dimensions should not be duplicated or given on a drawing two different ways.
3. Dimensions should not be placed in the view where the best shape and true form are shown.
4. Avoid long extension and leader lines.
5. Place a dimension between views, especially if it applies to both views and will improve clarity
6. Do not assume that a paert is symmetrical. Dimension both sides of a symmetrically shaped part or use the centerline symbol or note to avoid confusion.
7. Spacing between dimensions should be consistent within a drawing.
8. Line up dimensions horizontally and vertically where possible.
9. Avoid crossing dimension lines or leaders where possible.
10. Make full use or notes, abbreviations, and symbols to show how many times a dimension applies. For example, use 2x in a note to designate that a detail specified in the note exists in two places on the drawing. Dimension separately if the times (x) designation would be confusing.