Second surface

VCL surfaces and corridor surfaces can be used as second surfaces in the measure feature. However, you can only select second surfaces from the currently loaded VCL design and not from a separate design file. VCL corridor template surfaces cannot be selected as a second surface.

In the Second Surface Settings screen, you can select the current VCL design as the Second surface design. Once selected, a Surface option is displayed enabling you to select a surface from the VCL design.

There is no change in functionality when using a VCL surface or VCL corridor surface as a second surface, compared to when using a TTM surface.