Relative scale

There have existed two traditions parallelly in the units of measurement, thus also in the map scales on the territory of Estonia:

The Russian system of measures began to spread during the second half of the 19th century. All maps of the Swedish era are in the system of measures of Old Livonia.

If a relative scale is missing on a map, it has been transformed either from the graphic or lexical scale. When both the lexical scale and relative scale are missing on a map, an estimated scale is given in square brackets, e.g. [4200].