As the grids are drawn as the lines of about saying as 1,000 meters apart. As the 1 ratio 100,000 to maps are divided into shows 1 km each square on the map on the surface of the earth.
For the maps of R.F of 1 to 25,000, the grid lines are of 4 cm apart. The map is about the 16 cm and this shows the 1 km on earth. Thus in each case, the grid lines form the enclosed of one square kilometer.
