Contour mapping.
The above signs are the conventional signs used in map-making. Contouring is most easily explained by cutting an apple in half and placing the halves face downwards, to represent a hill. You can then slice the pieces horizontally at regular distances to illustrate heights, as shown on a map.
Judging Heights and Distances
Every Scout must be able to judge distance from an inch up to a mile and more. You ought, first of all, to know exactly what is the span of your hand and the breadth of your thumb, and the length from your elbow to your wrist, and the length from one hand to the other with your arms stretched out to either side, and also the length of your feet and of your stride; if you remember these accurately, they are a great help to you in measuring things.
