![]() ![]() Sheets of an adjoining series, whether published or planned, that are at the same scale are represented by dashed lines. All represented sheets are identified by their sheet numbers. The diagram usually contains nine rectangles, but the number may vary depending on the locations of the adjoining sheets. It consists of as many rectangles representing adjoining sheets as are necessary to surround the rectangle that represents the sheet under consideration. On maps at 1:100,000 and larger scales and at 1:1,000,000 scale, the diagram is called the index to adjoining sheets. Maps at all standard scales contain a diagram that illustrates the adjoining sheets. This diagram, which is a miniature of the map, shows the boundaries that occur within the map area, such as county lines and state boundaries. The index to boundaries diagram appears in the lower or right margin of all sheets. This date is important when determining how accurately the map data might be expected to match what you will encounter on the ground. The map information date is found immediately below the word "LEGEND" in the lower left margin of the map. The credit line, telling who produced the map, is just above the legend. Still others may have been drawn, at least in part, by the US Army Corps of Engineers, the US Geological Survey, or other agencies affiliated or not with the United States or allied governments. Most military maps are now published by the DMA, but older editions of maps may have been produced by the US Army Map Service. Editions are numbered consecutively therefore, if you have more than one edition, the highest numbered sheet is the most recent. The edition number is found in bold print in the upper right area of the top margin and the lower left area of the bottom margin. It is a sequence reference expressed either as a four-digit numeral (1125) or as a letter, followed by a three- or four-digit numeral (M661 T7110).į. The series number is found in both the upper right margin and the lower left margin. For example, the scale note 1:50,000 indicates that one unit of measure on the map equals 50,000 units of the same measure on the ground.Į. The scale note is a representative fraction that gives the ratio of a map distance to the corresponding distance on the earth's surface. The scale is found both in the upper left margin after the series name, and in the center of the lower margin. It may also be a group of maps that serve a common purpose, such as the military city maps.ĭ. A map series usually includes a group of similar maps at the same scale and on the same sheet lines or format designed to cover a particular geographic area. The name given to the series is generally that of a major political subdivision, such as a state within the United States or a European nation. The map series name is found in the same bold print as the sheet number in the upper left corner of the margin. For maps at 1:100,000 scale and larger, sheet numbers are based on an arbitrary system that makes possible the ready orientation of maps at scales of 1:100,000, 1:50,000, and 1:25,000.Ĭ. It is used as a reference number to link specific maps to overlays, operations orders, and plans. The sheet number is found in bold print in both the upper right and lower left areas of the margin, and in the center box of the adjoining sheets diagram, which is found in the lower right margin. A map is generally named for the settlement contained within the area covered by the sheet, or for the largest natural feature located within the area at the time the map was drawn.ī. The sheet name is found in bold print at the center of the top and in the lower left area of the map margin. These circled numbers correspond to the following listed items.Ī. ![]() The circled numbers indicate the items of marginal information that the map user needs to know. MARGINAL INFORMATION ON A MILITARY MAPįigure 3-1 shows a reduced version of a large-scale topographic map. All maps are not the same, so it becomes necessary every time a different map is used to examine the marginal information carefully. The most logical place to begin is the marginal information and symbols, where useful information telling about the map is located and explained. It is important that you, as a soldier, know how to read these instructions. CHAPTER 3 MARGINAL INFORMATION AND SYMBOLS A map could be compared to any piece of equipment, in that before it is placed into operation the user must read the instructions. ![]()
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