Surfaces

When you enter measurement or floorplan mode, you will see a grid in the middle of the screen. This grid indicates the surface you would like to mark annotations or measurements on.

Horizontal Surface Horizontal surface : Selecting this surface will move the camera to a top down view for creating/measuring rooms and regions.
Vertical Surface Vertical surface : Selecting this surface will move the camera to a frontal view for creating/measuring doors and windows.

Tapping Select Surface will move the camera to the selected surface and bring up a drawing interface for creating annotations.

Note that if you are creating an annotation on a horizontal surface, the entire space between the floor and ceiling (specified by the current level ) will be annotated.