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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.