RKKA maps in scale 1:2500 000 (1 cm - 25 km) have dimension 14 deg. latitude and 34 deg. longitute. Langitude was counted from Greenwich. On maps in scale 1:2500000 was shown main towns, roads, railroads, boundaries. Maps were printed in 3 colors. On frames was given: signs and symbols, name of sheet, scale, date of publishing, publisher.
Name of sheets expressed by one number and name of 4 biggest cities.

General view of RKKA maps in scale 1:2500000 (combined 4 maps)