EO 405.05: MEASURING DISTANCE BETWEEN TWO POINTS ON A TOPOGRAPHICAL MAP
There are two ways to describe distance between feature; point to point, or along a route. Point to point measures the straight line between points. Measuring along a route might be an obvious path, road, or along your planned route.
To measure a straight line between two points:
a. take a piece of paper and place the upper edge on the map so that it touches the two points
b. mark the points on your paper
c. clearly indicate you start and finish points
d. now place the paper on your scale bars
e. calculate the distance.
To measure along a route (road, trail, stream, etc) between two points:
a. lay a piece of paper along the first section and mark the paper
b. now pivot the paper until it lays along the second section, mark your piece of paper at the end of the
c. repeat this process until you have reached point B
d. compare the distance marked on the paper to the bar scale and calculate the distance