Main Purpose and Description
How to identify points of equal height (elevation) set levels and mark out contours across a slope or hillside. How to make and test this simple tool.
Further information can be found in the WRC Resources Library
WH&C Vol 2, Part 1 (T: Pp 115-121 & H), AWHGS (CS: Chap 2, P. 83 and H: Chap 5, H1, P.5)