What are the large scale maps? What are types of these maps ?
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.
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.
1. Wall maps,
2. Linear scale,
3. Base direction line.
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.