There are three measurements you can make.

1. The horizontal width as measured by the ruler.You can drag the ruler to get a surveying

measure of the structure´s base.

2. The vertical height as measured by the ruler. Click on “ Vertical” and then drag the ruler to get

a surveying measure of the structure´s height.

3. The actual width of the base. Press “Walk base” and the person will report the base (in feet)

of the structure.

You now have three measurements, including a ratio of height and width. Calculate an

estimated height of the structure (in feet) and enter it to the nearest foot. Then press “Check.”