How to find the number of the coordinates of the grid?
The number of the vertical grid line on the left (west) side of the grid square is the first and second digits of the coordinates. The number of the horizontal grid line on the bottom (south) side of the grid square is the fourth and fifth digits of the coordinates. To determine the third and sixth digits of the coordinates, ...
How do you find the first and second digits of coordinates?
First, locate the grid square in which the point (for example, Point A, Figure 2) is located (the point should already be plotted on the map). The number of the vertical grid line on the left (west) side of the grid square is the first and second digits of the coordinates.
What is the six-digit grid coordinate of 115813?
On the bottom scale, the 100 meter mark nearest the vertical grid line provides the third digit, 5. On the vertical scale, the 100 meter mark nearest Point A provides the sixth digit, 3. Therefore, the six-digit grid coordinate is 115813
What is the principal digit of a coordinate?
The two larger numbers identify a grid line and are known as principal digits as depicted below. To plot coordinate values, always read right, then up. Coordinates are always given as an even number of digits so you know where to separate the easting and northing coordinates.
How to find coordinates of a point on a map?
What is the number of the vertical grid line on the left (west) side of the grid square?
Where are the zeros on a coordinate scale?
How many meters are there on each side of a map?
How precise is a 10 digit grid?
6 digits - 234064 - locates a point with a precision of 100-meters (a soccer field size area). 8 digits - 23480647 - locates a point with a precision of 10-meters (the size of a modest home). 10 digits - 2348306479 - locates a point with a precision of 1-meter (within a parking spot).
How accurate is a grid reference?
With an 8-figure reference, the last figure in each half of the reference (the easting and the northing) again subdivides this tenth into 10 parts, so that the accuracy is then to within 10 metres, and this is why you need a larger scale than 1:50,000 to make good use of it.
How accurate is a 12 figure grid reference?
These 12 figure co-ordinates locate a point on a map to an accuracy of 1 square metre, in this example a point approximately the centre of the field.
How many digits are in a grid coordinate?
A grid reference shows a particular location on a map using 4 digits or 6 digits. The grid reference depends on eastings and northings. Eastings are eastward measured distances. They are similar to the x-axis on a graph.
What is the most accurate grid reference?
The full ten-digit grid reference with National Grid letter – 'SH 60989 54379' or without letters '60989 54379' – the most accurate grid reference. Note that these longer grid references are hardly discernible at popular leisure map scales.
What is the rule for reading grid references?
When taking a grid reference, always read left to right along the bottom or top of the map first and then bottom to top along the side of the map.
What is a 10 figure grid reference?
A GPS unit commonly gives a ten-digit grid reference, based on two groups of five numbers for the Easting and Northing values. Each successive increase in precision (from 6 digit to 8 digit to 10 digit) pinpoints the location more precisely by a factor of 10.
What is the difference between 4 and 6 figure grid references?
Grid references help us to locate features/places on a map. What is the difference between four-figure and six-figure grid references? Four-figure grid references are used to find a grid square but we can use six-figure grid references to find an exact location within a grid square.
How do you read a 14 figure grid reference?
0:043:38How to read a 14 figure Grid Reference from a Topographic MapYouTubeStart of suggested clipEnd of suggested clipAnd a seven figure northing eastings are the vertical lines which run west to east and areMoreAnd a seven figure northing eastings are the vertical lines which run west to east and are represented by the numbers along the bottom northings are the horizontal lines which run south to north.
How close will a 8 digit grid get you?
Remember, four-digit grids get you to within 1000 meters, six-digit grids to within 100 meters and an eight-digit grid gets us to within 10 meters.
How do you read a 8 digit grid?
2:216:59How to Plot 8 Digit Grid Coordinates - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd I'm going to slide my protractor to the right until. The three is right in line with. The gridMoreAnd I'm going to slide my protractor to the right until. The three is right in line with. The grid line right here of two four. And now I'm ready to read up to three. Six.
What is a 6 digit grid reference?
The grid squares on your Ordnance Survey map are all one kilometre across, which makes it easier to divide them into ten in your head. By adding an extra number (between 1 and 10) to the easting and the northing, you'll come up with a six-figure reference that pinpoints a place to within 100 metres on the map.
What's the difference between grid references and coordinates?
Grid references are between the lines which make it look like a maths square that has numbers. The difference between grid references and coordinates is that coordinates are where the lines meet and grid references are in between the lines.
Why do we use grid references?
Grid references are used to locate a particular square on a map. This is important as it is a universal way for us to describe where things are on a map. The horizontal lines are called eastings as they increase as you move eastwards. The vertical lines are called northings as they increase as you move northwards.
What is the purpose of grid references?
A grid reference is a location on a map, which is found using the northing and easting numbered lines. Grid references are useful for helping a map user to find specific locations.
How do 6 figure grid references work?
The grid squares on your Ordnance Survey map are all one kilometre across, which makes it easier to divide them into ten in your head. By adding an extra number (between 1 and 10) to the easting and the northing, you'll come up with a six-figure reference that pinpoints a place to within 100 metres on the map.
How many digits are in grid coordinates?
Grid coordinates of some even number of digits ranging from 2 to 10 (i.e. 23480647 In this case, eight digits identify a place of about the size of a modest home.). You always read right, then up when plotting coordinates.
What is grid coordinates?
Local Area; reading grid coordinates. Grid coordinates are used to define a particular place within a local area (within a 100 by 100 kilometer area). Coordinates are written along the sides of a map designating specific grid lines. (These grid lines are based on UTM values.) The two larger numbers identify a grid line and are known as principal digits as depicted below.
How to plot coordinates?
To plot coordinate values, always read right, then up. Coordinates are always given as an even number of digits so you know where to separate the easting and northing coordinates. This allows you to abbreviate to the degree of precision you require within a local area. Grid coordinates are used to define point features, such as a neighborhood, soccer field, a particular house, or even a parking place. These require different levels of granularity. For example;
How many parts are in the National Grid?
To review, we can see a complete US National Grid spatial address contains three parts as we drill down to a unique location,
What is the first part of a MGRS coordinate?
The first part of an MGRS coordinate is the grid-zone designation. The 6° wide UTM zones, numbered 1–60, are intersected by latitude bands that are normally 8° high, lettered C–X (omitting I and O). The northmost latitude band, X, is 12° high. The intersection of a UTM zone and a latitude band is (normally) a 6° × 8° polygon called a grid zone, whose designation in MGRS is formed by the zone number (one or two digits – the number for zones 1 to 9 is just a single digit, according to the example in DMA TM 8358.1, Section 3-2, Figure 7), followed by the latitude band letter (uppercase). This same notation is used in both UTM and MGRS, i.e. the UTM grid reference system; the article on Universal Transverse Mercator shows many maps of these grid zones, including the irregularities for Svalbard and southwest Norway.
What is grid reference?
When the term 'grid square' is used, it can refer to a square with a side length of 10 km (6 mi), 1 km, 100 m (328 ft), 10 m or 1 m, depending on the precision of the coordinates provided. (In some cases, squares adjacent to a Grid Zone Junction (GZJ) are clipped, so polygon is a better descriptor of these areas.) The number of digits in the numerical location must be even: 0, 2, 4, 6, 8 or 10, depending on the desired precision. When changing precision levels, it is important to truncate rather than round the easting and northing values to ensure the more precise polygon will remain within the boundaries of the less precise polygon. Related to this is the primacy of the southwest corner of the polygon being the labeling point for an entire polygon. In instances where the polygon is not a square and has been clipped by a grid zone junction, the polygon keeps the label of the southwest corner as if it had not been clipped.
What is the UPS South coordinate?
In the polar regions, a different convention is used. South of 80°S, UPS South ( Universal Polar Stereographic) is used instead of a UTM projection. The west half-circle forms a grid zone with designation A; the east half-circle forms one with designation B; see figure 3. North of 84°N, UPS North is used, and the west half-circle is Y, the east one is Z; see figure 4. Since the letters A, B, Y, and Z are not used for any latitude bands of UTM, their presence in an MGRS coordinate, with the omission of a zone number, indicates that the coordinates are in the UPS system.
What are the boundaries of latitude bands?
The boundaries of the latitude bands are parallel circles (dashed black lines in figure 1), which do not coincide with the boundaries of the 100,000-meter squares (blue lines in figure 1). For example, at the boundary between grid zones 1P and 1Q, we find a 100,000-meter square BT, of which about two thirds is south of latitude 16° and therefore in grid zone 1P, while one third is north of 16° and therefore in 1Q. So, an MGRS grid reference for a position in BT should begin with 1PBT in the south part of BT, and with 1QBT in the north part of BT. At least, this is possible if the precision of the grid reference is enough to place the denoted area completely inside either 1P or 1Q.
What is the military grid reference system?
The Military Grid Reference System ( MGRS) is the geocoordinate standard used by NATO militaries for locating points on Earth. The MGRS is derived from the Universal Transverse Mercator (UTM) grid system and the Universal Polar Stereographic (UPS) grid system, but uses a different labeling convention. The MGRS is used as geocode for the entire Earth.
What is the precision level of 4Q.GZD?
4Q .....................GZD only, precision level 6° × 8° (in most cases)
What is the primacy of the southwest corner of a polygon?
Related to this is the primacy of the southwest corner of the polygon being the labeling point for an entire polygon. In instances where the polygon is not a square and has been clipped by a grid zone junction, the polygon keeps the label of the southwest corner as if it had not been clipped.
How to find coordinates of a point on a map?
The most accurate way to determine the coordinates of a point on a map is to use a coordinate scale. You do not have to use imaginary lines; you can find the exact coordinates using a Coordinate Scale and Protractor. This device has two coordinating scales, 1:25,000 meters and 1:50,000 meters. Make sure you use the correct scale.
What is the number of the vertical grid line on the left (west) side of the grid square?
The number of the vertical grid line on the left (west) side of the grid square is the first and second digits of the coordinates.
Where are the zeros on a coordinate scale?
Check to see that the zeros of the coordinate scale are in the lower left hand (southwest) corner of the map grid square.
How many meters are there on each side of a map?
The map has vertical lines (top to bottom) and horizontal lines (left to right). These lines form small squares 1,000 meters on each side called grid squares.