Look to where the key is and it should give you a scale like 1cm on the map is the equivelent to a km (example)
The map scale is a part of the map that is used to measure distance. The map scale can often be found in or around the map legend.
distance
To measure distance using a topographic map, you can use the map's scale. First, determine the scale of the map, such as 1:24,000. Then, use a ruler to measure the distance on the map between two points that you want to calculate the actual distance for. Convert the measured distance on the map to the actual distance using the map scale.
Using a ruler which marked by Centimeters will more helpful to measure the distance of a map.
If you look at the bottom of the map, there should be a scale. Take a ruler, measure the distance for each measurement, and convert to what you need
The scale bar on a map helps you measure distance. It represents the relationship between the distances on the map to the actual distances on the Earth's surface. By using the scale bar, you can accurately determine the distance between two points on the map.
Miles
To measure a distance on a map that exceeds its length, you can use a piece of string or a flexible measuring tool to trace the route along the map. Mark where the string overlaps and then measure the length of the string using a ruler. Alternatively, if the map has a scale, you can calculate the distance in segments, measuring each segment separately and then summing them up. This way, you can accurately determine the total distance despite the map's limitations.
To measure distance on a map using a ruler, first identify the scale indicated on the map, which shows the relationship between map distance and actual distance on the ground. Place the ruler along the path you want to measure, ensuring it follows the correct route. Read the measurement on the ruler and then convert it using the scale to determine the actual distance. This method provides a straightforward way to estimate distances between locations on the map.
Scale
the scale
Use the scale given in the map. Measure the distance by tracing the road with a string. Then measure the string. eg.10 cm. This is the working to get the distance: scale given = 2 cm distance n cm. = 10 cm = 10/2 = 5 ans=The distance on actual ground is 5 km.