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These maps show more details :

They are large in size. These have a scale of 6 inch = 1 mile. These show the details of buildings and property.

These, maps are of following four types on the basis of scale :

1. Cadastral maps : These maps show full details of buildings and properties and are known as ‘plans’.

2. Topographical maps : Survey of India prepares these maps on a scale of 1:50,000 or inch : 1 mile. These are large scale maps showing the natural and man-made features of an area.

3. Wall maps : These are small scale maps used for educational purposes.

4. Atlas maps : These are small scale maps, bound together in the form of an Atlas. These are best suited for eduational purposes.

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 1. Wall maps : These maps are generally drawn boldly so that they can be seen from a distances. They are used in classrooms and later to a large audience. These maps broadly show very large areas like world as a whole, continents and countries etc. The scale is smaller than that of topographical maps but larger than atlas maps.

2. Linear scale : This scale is expressed as a straight line. The base is calibrated to express visual equivalents of representative fraction or verbal scale. The basis are divided into a number of equal parts and are marked to show that these divisions represent on actual ground. The scale has the advantage that it remains true even after reduction or enlargement of the map. Distances on the map are smaller than the corresponding distance on actual ground.

3. Base direction line : Direction has been defined as an imaginary straight line on the map or the ground showing the angular position of various maps with respect to a common base direction. The time pointing to the north is regarded as the zero direction or base direction line.

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 The earth is a sphere. A globe is the true representation of the earth. The globe is a small model of the earth. But sometime we have to face many problems in using a globe. So it has become necessary to use maps. Generally maps are preferred to globes for their use for educational purpose.

1. The whole earth cannot be studied from a globe.

2. Globe do not show a large number of details. These can be shown on map.

3. Distance cannot be measured on a globe because it is a curved surface.

4. Maps can be easily handled.

5. A comparative study of two areas is not possible on a globe.

6. Maps can be easily incorporated in books or bounded in Atlas.

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 The term cadastral is derived from French word ‘cadaster’ meaning register of territorial property. The cadastral maps are drawn to register the ownership of landed property by demarcating the boundaries of fields.

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 A map is a diagrammatic representation of the whole or a part of the earth and its surface features at a given scale.