# Technical terms used in the map

Rural Technology
• 1. Scale

Maps are always to the scale. This means there is a fixed relationship between actual distance or shape and distance or shape on the map. The actual distance is in multiple of the distance taken on the map and this is called scale of map. The scale is described in terms of 1:25000. This means 1cm distance on the map is equivalent to the actual distance of 25000cm (250 meter). If we know the scale of the map then we can calculate distance between two places.

• 2. Direction

North direction is marked on the map. Generally, it is on the upward side. Other directions are known from this. Following symbol is used to show north direction.

• 3. General Symbols

Following symbols are used on the map:

Latitude is measured from the equator, with positive values going north and negative values going south. Longitude is measured from the Prime Meridian (which is the longitude that runs through Greenwich, England), with positive values going east and negative values going west. So, for example, 65 degrees west longitude, 45 degrees north latitude is -65 degrees longitude, +45 degrees latitude.

Rural Technology