North, between First Street and the red dot and dash boundary line to the west. Then convert the map area to area on the ground in hectares. V. Classification and Symbolization 1. An example of ordinal point symbols, for instance, are city labels that vary in type size according to ranges of population. Point Line Area Nominal . . .
Most topographic maps have two kinds of contour lines to indicate elevation.
Major, or index, contours occur about every fourth or fifth contour with a darker tone. Minor contours show elevation between index contours. Jacksonville Beach, FL . . . Altoona, PA . . . Gilroy Hot Springs, CA . . .