While in Surfer's 3D View, you can use the mouse wheel to increase/decrease the height above the surface. You can also hold the mouse wheel or center button down and drag the mouse forward/backwards to move up or down.

If you want to enter the exact value of the height above the surface, follow the steps below:

1. In the 3D View Contents window, click on Environment.
2. In the Properties window, click the Camera tab.
3. Expand the Position header, if necessary.
4. Enter the elevation you want as the Z Position (in elevation units). For example, if you want to be 50 meters above the surface (assuming your Z units are meters), add 50 to the value displayed in the Z Position field.

Updated November, 2019