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Dimensions, Tolerance and Assemblies, 3, Limit Tolerance: the upper and…

- - - - dimensioning of multiple feature : to dimension multiple same dimension use N x Dimension
        dimensioning of radius:radial dimension start with capital 'R'
        dimensioning of circle , Arc and hole :
        circle dimensioned by diameter
        Arc dimensioned by radius
        hole located by centrelines
        dimensioning angles: marked with curved dimension line & has degree symbol
      - Parallel dimensioning :numbers of dimensions are measured in the same direction from a common feature
        superimposed running dimensioning: simplifies parallel dimensions in order to reduce the space used on a drawing.
        chain dimensioning: dimensions are drawn from one feature to a second feature, then a third feature is located relative to the second feature.
        combined dimensioning:combination of both chain & parallel dimension is called as a combined dimension.
        dimensioning small features:placed arrow head outside the extension line
- - - - Bilateral Tolerance: allowed to vary in two directions from the specified dimension. Both directions need not vary by the same amount.
      - Limit Tolerance: upper and lower limits of the dimension are specified
      - Unilateral Tolerance:allowed to vary in only one direction