Sketcher > Dimensioning Sketcher Geometry > Working with Dimension Tools > Normal Dimensions > To Create a Linear Dimension Between Arcs
  
To Create a Linear Dimension Between Arcs
1. Right-click and choose Dimension from the shortcut menu or click Sketch > Normal.
 
* To create a non-horizontal dimension, make sure there is a linear reference in the sketch for the dimension.
2. Select the first arc.
3. Select the second arc.
4. To create a non-horizontal dimension, select the linear reference.
5. Middle-click to place the dimension. The dimension is placed.