Dimension Type
Dimensions in drawings are either:
The dimension type is set when you insert
a drawing view. You can view and change the dimension type in drawing
view PropertyManagers.
The rules for dimension type are:
SolidWorks specifies
Projected type dimensions for
standard and custom orthogonal views and True
type dimensions for isometric, dimetric, and trimetric views.
If you create a projected
or auxiliary view from another view, the new view uses Projected
type dimensions, even if the original view used True
type dimensions.