# How do I find my national grid reference?

## How do I find my national grid reference?

How to find a National Grid Reference

1. When you find an object, place it in a bag and write on the location of the findspot.
2. Look at a 1:25000 scale OS map.
3. Locate the findspot on the map, and then read the National Grid Reference; the first part will be the prefix (2 letters).

### What is the UTM zone for Australia?

Within continental Australia, there are 8 UTM Zones, numbered 49-56 going from west to east (see Figure 1). As shown in Figure 2, there are two zones in the Northern Territory zones 52 and 53, with Darwin falling in zone 52, and the Alligator Rivers Region primarily within zone 53.

#### How do you find the latitude and longitude of a grid reference?

1. 1 convert (geodetic) latitude/longitude to geocentric cartesian coordinates: e² = (a²−b²) / a²
2. 2 apply Helmert transform. The 7-parameter Helmert transform is given by:
3. 3 convert cartesian co-ordinates back to latitude/longitude.

What is the grid reference of Australia?

The grid system shown on all Australian Topographic maps is Map Grid of Australia (MGA) and is based on the Universal Transverse Mercator Projection or UTM. The world is divided into 60 UTM grid zones (between latitude 84oN and 80oS).

How do I find my 6 digit grid reference?

Grid references

1. First, find the four-figure grid reference but leave a space after the first two digits.
2. Estimate or measure how many tenths across the grid square your symbol lies.
3. Next, estimate how many tenths up the grid square your symbol lies.
4. You now have a six figure grid reference.

## How do I find my UTM zone?

So for example, the UTM zone number for 39° W would be found through these steps: -39 + 180 = 141. 141 / 6 = 23.5. 5 rounds up to 24….Option 1 – The Mathematic Approach

2. Then divide by 6.
3. Finally round-up to the next highest whole number.

### What is a 6 digit grid reference?

The distance between one grid line and the next is divided into tenths. First, find the four-figure grid reference but leave a space after the first two digits. Estimate or measure how many tenths across the grid square your symbol lies. Write this number after the first two digits.

#### What are Eastings and Northings coordinates?

Easting and northing are geographic Cartesian coordinates for a point. Easting is the eastward-measured distance (or the x-coordinate) and northing is the northward-measured distance (or the y-coordinate). Easting and northing coordinates are commonly measured in metres from the axes of some horizontal datum.

How to find a grid reference in the UK?

UK Grid Reference Finder Instructions: Simply right click on the map to find a grid reference at that point. Enter a location search below to zoom to the approximate location.

How does the map grid of Australia work?

The UTM system has been used with the GRS80 ellipsoid and Geocentric Datum of Australia (GDA2020) latitudes and longitudes to define Map Grid of Australia 2020 (MGA2020). The Krueger n-series or Krueger λ -series formulae are used to convert between UTM (or MGA2020) coordinates and geographic coordinates and vice versa.

## How to find grid reference in Google map?

Instructions: Simply right click on the map to find a grid reference at that point. Enter a location search below to zoom to the approximate location.

### How to make a grid reference in UTM?

Enter the latitude and longitude coordinates ( note for the Southern hemisphere, degrees latitude must be prefixed with a minus (-) sign) and then press Submit Data A full UTM Grid reference will then be displayed.

Categories: Users' questions