Chapter 2 Margin Information

Question 1

Before using any unfamiliar map, what must you do?

Answer 1

the first essential thing to do is to have a good look at the information contained in the margins. The margins give much information essential to the full understanding and use of the map.

Question 2

On military maps produced under allied international agreements, the layout of the margin information is __________.

Answer 2

is to a large extent standardized.

Question 3

T/F All maps conform to these standardization rules.

Answer 3

False The user must be prepared for variation in layout, although, in general, the more essential items of information are placed in common positions.

Question 4

T/F Not all maps conform to these standardization rules.

Answer 4

True, The user must be prepared for variation in layout, although, in general, the more essential items of information are placed in common positions.

Question 5

The essential elements required to identify a particular map sheet are:

Answer 5

a. map series number; b. sheet number (or name, if there is no number); and c. edition number. The elements appear together on the map sheet in a panel

Question 6

The map series number

Answer 6

identifies both the area and the scale of the map

Question 7

How do we identify the map series?

Answer 7

The series number can be found from the map catalogue. All operational map series are shown in the Department of National Defence, Catalogue of Maps, with indexes to series show all sheets published.

Question 8

The edition number

Answer 8

identifies the currency of the information shown on the map

Question 9

a credit note

Answer 9

On Canadian maps a credit note appears in the lower left and lower right hand corners and indicates the authority of the edition, for example, Energy Mines and Resources Canada. The credit note also lists the producer, dates and general methods of preparation or revision.

Question 10

On allied maps, the letters following the edition indicate the authority under whom the edition has been prepared

Answer 10

“NIMA”, National Imagery and Mapping Agency (USA), formerly known as “DMA” Defence Mapping Agency (USA), etc.

Question 11

Which numbers are needed when requesting a map?

Answer 11

Only the series number and the sheet number need be quoted. If the series number is not known, the area covered and the scale required must be stated.

Question 12

Who’s responsibility is it to provide the latest current edition?

Answer 12

It is the responsibility of the map depot to provide the latest current edition.

Question 13

T/F Some maps are identified by a sheet name instead of by a sheet number.

Answer 13

True, in rare cases.

Question 14

Where is the scale of the map?

Answer 14

At the top of the map, and also in the bottom margin.

Question 15

Where are the graphic scales?

Answer 15

Placed in the centre of the bottom margin and are normally expressed in statute miles and in kilometres.

Question 16

Where is the unit of elevation?

Answer 16

Each map must carry in a conspicuous position, normally in the bottom margin, a note that indicates “Elevation in Feet” or “Elevation in Metres”, as appropriate.

Question 17

Where is the contour interval?

Answer 17

A note stating “CONTOUR INTERVAL FEET” or “CONTOUR INTERVAL METRES” is shown in the bottom margin near the graphic scales

Question 18

Where are the conventional signs?

Answer 18

A table showing the conventional signs used on the sheet in their correct colours with their descriptions is shown in the bottom, side margin or back of the map sheet.

Question 19

Where are the instructions on the use of the grid?

Answer 19

These instructions are shown in a panel in the bottom or side margin and are normally in the colour used for the grid on the face of the map.

Question 20

Where is the information on true, grid, and magnetic north?

Answer 20

Each map contains the information necessary to determine the true, grid and magnetic bearing of any line within the area covered by the map sheet. This information is given in the form of a diagram with explanatory notes.

Question 21

Where is the index to adjoining sheets?

Answer 21

A diagram showing the position of the map sheet in relation to adjoining sheets is shown near the lower margin.

Question 22

What does the index to adjoining sheets show?

Answer 22

The diagram shows the sheet numbers of the adjoining sheets and accentuates the sheet in hand.

Question 23

Where is the index to boundaries?

Answer 23

The Index to Boundaries diagram appears in either the lower or right margin of military city maps and some maps of the scale of 1:250 000.

Question 24

What is the index to boundaries?

Answer 24

The diagram, which is a miniature of the map, shows the boundaries that occur within the map such as country, provincial and international.

Question 25

Where are the glossaries?

Answer 25

Some maps carry glossaries of geographical terms and of abbreviations used on the map,with translations into different languages as necessary. They are usually in the lower margin.

Question 26

T/F Some maps have glossaries

Answer 26

True

Question 27

T/F All maps have glossaries

Answer 27

False

Question 28

Where is the security classification?

Answer 28

The Security Classification, if any, is shown in the top and bottom margins in a prominent colour, usually red.

Question 29

What information is also important for Global Positioning System (GPS)

Answer 29

Information is given on the grid or grids on the map to which lines and figures refer. Projections, spheroid(s), datums, origin and false coordinate origins are stated for each grid, printed in the colour of the figure of the grid to which they refer. The information appears in the lower or right margins

Question 30

If the GPS uses a different datum or projection than the map, _________________.

Answer 30

then co-ordinates between the two will most likely be in conflict.

Question 31

A history note

Answer 31

is given in the bottom margin to show what unit or establishment produced the map, the date and the information from which it has been compiled. When the map has subsequently been revised, the date of revision, the extent of the revision, and the source of the information is also stated.

Question 32

Where is the reference panel?

Answer 32

Bottom right corner.