Where are the vertical numbers on a grid?
The horizontal numbers on your grid are for measuring your easting co-ordinates; the vertical numbers are for measuring your northing coordinates. 1. Line up 0/0 on the bottom left corner of your grid. The first step is to line up 0/0 on your protractor with the bottom left corner of the grid you’re working with. 2.
What kind of format is a floating point number?
This is the format most commonly used when working with electronic navigation equipment. This is the format you’ll find most computer based mapping systems displaying. The coordinates are stored internally in a floating point data type, and no additional work is required to print them as a floating point number.
How are coordinates stored in a floating point number?
The coordinates are stored internally in a floating point data type, and no additional work is required to print them as a floating point number. Often the N-S and E-W designators are omitted. Positive values of latitude are north of the equator, negative values to the south.
Which is the most common way to mark a map?
This is the most common format used to mark maps. It’s also the most cumbersome to work with. It’s a lot like telling time… There are sixty minutes in a degree (60′ = 1°).
How are the areas on a map numbered?
Standard topographic maps are numbered using a system developed for the International Map of the World. Map areas at 1:1 million scale are identified by a two letter combination which identifies the hemisphere and a four degree band of latitude and a two digit number which identifies a six degree band of longitude.
What do the first two digits on a map mean?
The first two digits define a longitude band 0.5 degree wide and the second two digits a latitude band 0.5 degree wide. Six 1:100 000 scale map areas nest into a standard 1:250 000 scale sheet areas.
How are the 1 : 1 million scale maps numbered?
Each 1:1 million scale map is divided into 16 rectangles, 1 degree of latitude by 1.5 degrees of longitude. These rectangles define the standard 1:250 000 map areas. These areas are numbered left to right and top to bottom. Combining the 1:1 million number and the number of the rectangle produces the 1:250 000 scale map number.
The horizontal numbers on your grid are for measuring your easting co-ordinates; the vertical numbers are for measuring your northing coordinates. 1. Line up 0/0 on the bottom left corner of your grid. The first step is to line up 0/0 on your protractor with the bottom left corner of the grid you’re working with. 2.