Smesta

In cartography, a sheet of transparent film, glass or plastic carrying a "ruling" or other regularly repeated pattern which may be used in conjunction with a mask, either photographically or photomechanically, to produce areas of the pattern.

A network of intersecting positional lines printed on a map or chart from which a fix may be obtained.

A series of regular spaced opaque lines on glass, crossing at right angles, producing transparent apertures between intersections. Used in a process camera to break up a solid or continuous tone image into a pattern of small dots.

A series of points whose relative positions and elevations are known. These positions are used in basic data in mapping and charting. Normally, these positions are established by survey methods, and are sometimes referred to as trig control or trigonometrical net(work).

Two sets of parallel lines intersecting at right angles and forming squares; the grid is superimposed on maps, charts, and other similar representations of the surface of the earth in an accurate and consistent manner to permit identification of ground locations with respect to other locations and the computation of direction and distance to other points.

Axial, lateral, and connecting routes designated in peacetime by the host nation to meet the anticipated military movements and transport requirements, both Allied and national.

A combination of radio or radar direction-finding installations which, operating in conjunction, are capable of plotting the position relative to the ground of an aircraft in flight.

In cartography, a network of lines representing the earth's parallels of latitude and meridians of longitude.

A series of straight lines, superimposed over a conformal projection and indicating grid north, used as an aid to navigation. The interval of the grid lines is generally a multiple of 60 or 100 nautical miles.

A grid coordinate system based on the transverse Mercator projection, applied to maps of the earth's surface extending to 84 N and 80 S latitudes.