Mathematical elements for maps of scale 1 : 50 000, 1 : 100 000

I. Rectangular coordinates grid.

Vertical lines of a rectangular grid.

Code - 13210000, type (character localization) - line, characteristic - 17.

Horizontal lines of a rectangular grid.

Code - 13220000, type - line, characteristic - 17.

II. Geographic coordinates grid.

Geographic coordinates grid is shown by lines of parallels and meridians, which are the sides of an internal sheets frame and the ticks onto frames of lines of parallels and meridians.

1. Ticks of geographic coordinates grid (are given along an internal frame of a sheet): are drawn through 1 ' (minute), length of a dash - 2 mm, each fifth dash - by length of 3 mm.

Grid ticks of meridians.

Code - 13111000,  type (character of localization) - line, characteristic - 19. Geodetic coordinates - longitude L..

Grid ticks of parallels.

Code - 13121000, type - line, characteristic - 19. Geodetic coordinates - latitude B.

2. Crossing average meridians and parallels (central cross). Length of dash - 15 mm.

Vertical lines of the central cross.

Code - 13410000, type - line, characteristic - 19. Geodetic coordinates - longitude L.

Horizontal lines of the central cross.

Code - 13420000, type - line, characteristic - 19. Geodetic coordinates -  latitude B.