One who draws this will show some relief (7,3)
I believe the answer is:
contour map
This might be a double definition.
'one who draws this will' is the first definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'some relief' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'show' is the link.
Can you help me to learn more?
(Another definition for contour map that I've seen is " Chart giving height information".)