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Dimensions & Tolerances - Coggle Diagram

- - - - Consists of several dimensions originating from a common reference surface (also known as the datum).
    - - Simplifies parallel dimensions in order to reduce the space used on a drawing.
    - - Should only be used if the function of the object would not be affected by the accumulation of the tolerances
    - - Uses both chain and parallel dimensioning.
    - - Placing arrow heads between the extension lines may make the dimension very difficult to read. Arrow heads can be placed outside the extension lines instead.
    - - To dimension multiple same dimensions, use N x Dimension.
    - - Radial dimensions start with capital 'R'.
    - - A circle is dimensioned by its diameter
      - An arc is dimensioned by its radius
      - Holes are located by their centerlines
    - - A curved dimension line and has the degree symbol.