SCALES

The scale of a map is often given in the form 1 : 100.000, or 1 : 25.000, that is as a ratio 1 : n. The scale 1 : 25.000 means that 1 cm on the map represents 25.000 cm or 0,25 km on the ground. When 1 : n is given the scale of a map it is called the representative fraction (R.F.) on the map.