The scale at which a map will be plotted directly affects the choice of instruments
and procedures used in performing the mapping survey.This is because the
accuracy with which the position of an object is depicted on a map is related to
the map’s scale, which in turn dictates the accuracy with which features must be
surveyed. Consider, for example, a map plotted at a scale of 1 in.= 20 ft. If distances
and locations can be scaled from the map to within say 1/50th in., this represents
a scaling error of (1/50)20 = +/-0.4 ft. To ensure that the accuracy of the
surveyed data does not limit the accuracy with which information can be scaled