Map Scale

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That means that distance on the map always has a constant ratio with distance on the ground.

Map scale. The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. This simple concept is complicated by the curvature of the earths surface which forces scale to vary across a map. Because of this variation the concept of scale becomes meaningful in two distinct ways.

Maps are often known as large scale or small scalea large scale map refers to one that shows greater detail because the representative fraction eg 125000 is a larger fraction than a small scale map which would have an rf of 1250000 to 17500000. A map scale is a ratio of the distance on a map to the actual distance of the ground. Map scales can usually be found on the outer edge of a map usually near the maps key a set of symbols that.

The map scales page states a 110000 map will show objects 100 times as large as a 1100000 map but will only show 1100th the land area on the same sized piece of paper the 1100th area figure is correct but the 100 times as large should be 10 times as large. The difference is due to linear vs. The verbal scale is the simplest of the three types of map scales because it provides map distance and actual distance.

An example of a verbal scale is 1 centimeter 30 miles. In this instance 1 centimeter on the map equals a straight line distance of 30 miles. At a map scale of 1100000 1 kilometer on the ground is equivalent to 1 millimeter on the map.

The linear scale or line scale. This is the most common scale used for maps and you need to really know how to use it. This is a special ruler that is drawn below a map that can be used to measure an area or distance.

It is divided into a number of equal parts. They would be omitted usually from maps in the 150000 to 1100000 scale range. These maps cover more area while retaining a reasonable level of detail.

Maps at these scales most often use the 15 minute or 30 by 60 minute quadrangle formats. Small scale maps 1250000 and smaller show large areas on a single map sheet but details are. Map scale is the relationship between distance on the map and distance in real life.