6 Figure Grid References example with Eastings and Northings on a topographic map.

The image presents a 6-figure grid reference task, which involves identifying the correct grid references for points marked on a map using the eastings (horizontal lines) and northings (vertical lines) of a map grid.

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🔍 Understanding 6-Figure Grid References

A 6-figure grid reference is made up of:
- 3 digits for Easting (the horizontal coordinate)
- 3 digits for Northing (the vertical coordinate)

It is derived from a 100-meter square, where each 100m x 100m square is subdivided into 10x10 smaller squares (each 10m x 10m), allowing precision to within 10 meters.

To find a 6-figure grid reference:
1. Identify the easting (x-coordinate) and northing (y-coordinate) of the bottom-left corner of the square.
2. Estimate how far into the square the point lies (on a scale of 0–9).
3. Combine: Easting + Northing → 6-digit code.

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🗺️ Map Analysis

From the map:

- The main grid has numbers along the bottom (Eastings): 73 to 79
- Along the side (Northings): 94 to 98

So the full grid system uses:
- Eastings: 730000 to 790000
- Northings: 940000 to 980000

But we only use the last two digits of the easting and northing for the grid reference, as shown in the example at the bottom: GR751958

Let’s break that down:
- 75 = Easting (from 750000)
- 19 = Northing (from 190000) → Wait! That doesn’t match the map.

Wait — actually, the map shows values like 95, 96, 97, 98 on the right side (northings), so it's likely using Northing = 950000 to 980000.

But the reference GR751958 suggests:
- 751 = Easting (751,000)
- 958 = Northing (958,000)

But wait — the map shows 73 to 79 along the bottom, so eastings go from 730000 to 790000, and northings from 940000 to 980000.

So GR751958 means:
- Easting: 751,000 → between 750,000 and 760,000 → so 751 on the map
- Northing: 958,000 → between 950,000 and 960,000 → so 958 on the map

This corresponds to the square with:
- Easting: 75 (on the bottom)
- Northing: 95 (on the side)

And then the point is 1/10th across in easting (751), and 8/10ths up in northing (958).

So the point is located near the center-right of the 75/95 square, possibly near Waimakariri River or Kaiapoi area.

But let’s focus on the three labeled points A, B, C on the small grid.

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✔ Step-by-Step: Solve for Points A, B, C

We are given:

- A = 970280
- B = 989319
- C = 005255

Wait — these don't look like standard 6-figure grid references because they have 6 digits, but they start with 97, 98, 00, etc., which may be confusing.

Let’s re-analyze.

Actually, looking at the small grid on the left, it shows:

- Eastings: 95 to 02 (but this seems off — likely a typo or mislabeling)

Wait — the small grid has:
- Eastings: 95, 96, 97, 98, 99, 00, 01, 02 → this appears to be 00 to 99, but written in two-digit format.

But the Northings go from 25 to 32.

This small grid is likely a practice grid, not tied directly to the main map.

But the main map has:
- Eastings: 73 to 79
- Northings: 94 to 98

So the actual map uses 730000 to 790000 for eastings, and 940000 to 980000 for northings.

Now, the example reference GR751958 means:
- 751 → Easting = 751,000
- 958 → Northing = 958,000

So the point is in the 75/95 square (i.e., easting 75, northing 95), and:
- 1 unit east (100m) → 751,000
- 8 units north (800m) → 958,000

So the point is 1/10th across and 8/10ths up in the square.

Now, let’s analyze the three points A, B, C on the small grid.

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🔎 Small Grid Analysis (Left Side)

This is a practice grid with:
- Eastings: 95, 96, 97, 98, 99, 00, 01, 02 → this is unusual; likely it's 95 to 02, meaning 95 to 02 in the next hundred? Probably meant to be 95 to 02, but that’s confusing.

Alternatively, perhaps it's showing easting values from 950000 to 020000, but that doesn’t make sense.

Wait — maybe it's not the same scale.

But notice:
- The values given for A, B, C are:
- A = 970280
- B = 989319
- C = 005255

These are 6-digit numbers, and they resemble grid references.

Let’s interpret them as:
- First 3 digits = Easting
- Last 3 digits = Northing

So:
- A = 970280 → Easting = 970, Northing = 280 → But this can't be, because the map only goes to 79 in easting.

Wait — clearly, the main map has eastings from 73 to 79, so 730000 to 790000, and 940000 to 980000 for northings.

So a 6-figure grid reference should be something like:
- 751958 → 751,000 easting, 958,000 northing

So:
- First three digits: 751 = Easting (751,000)
- Last three digits: 958 = Northing (958,000)

Thus, the 6-figure reference is written as 751958, without spaces.

So now, the values given:
- A = 970280 → Easting = 970, Northing = 280 → impossible, since max easting is 79 → 790,000

Wait — this suggests the small grid is not the same as the main map.

Ah! The small grid on the left is separate — it's a practice exercise.

Let’s look again.

The small grid has:
- Eastings: 95, 96, 97, 98, 99, 00, 01, 02 → likely 95 to 02, meaning 950000 to 020000, but that doesn't make sense.

Wait — perhaps it's not the same coordinate system.

But the points A, B, C are plotted on this small grid.

Let’s interpret the small grid properly.

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🧩 Reinterpreting the Small Grid

The small grid has:
- Eastings: 95 to 02 → likely 95 to 02, but that's not logical.

Wait — maybe it's 95 to 02, meaning 950000 to 020000, but that would be negative.

Alternatively, it might be a different map, or the labels are just for the grid squares.

But the northings go from 25 to 32.

And the points:
- A is at (97, 28) → Easting 97, Northing 28
- B is at (99, 31) → Easting 99, Northing 31
- C is at (00, 25) → Easting 00, Northing 25

But the given answers are:
- A = 970280
- B = 989319
- C = 005255

Let’s try to see if these match.

Suppose the grid is based on a 100,000 meter base, and the eastings and northings are in thousands.

For example:
- If the easting is 97, that could mean 970,000
- Northing 28 → 280,000

Then A = 970280 → Easting 970, Northing 280 → matches the position at (97, 28)

Similarly:
- B = 989319 → Easting 989, Northing 319 → but on the grid, B is at (99, 31), so 990 and 310?

Wait — no.

Wait: 989319 → Easting 989, Northing 319 → but on the grid, B is at (99, 31), which would be 990 and 310.

Not matching.

Wait — perhaps the grid is 100m per square, and the coordinates are in meters.

But the small grid has 8 columns (95 to 02), and 8 rows (25 to 32).

So:
- Each square is 100m × 100m
- The coordinates are in meters, but only the last three digits are shown.

But the values given are 6-digit numbers.

Let’s suppose the full grid reference is formed by:
- Taking the easting and northing of the bottom-left corner of the square
- Then adding the tenths of the way into the square

But in this case, the small grid might be a simplified version.

Wait — here’s a better idea:

Maybe the numbers on the grid are not the full coordinates, but only the last two digits of the easting and northing.

But the given answers are 6-digit numbers.

Let’s try this:

Assume that the grid reference is formed by:
- First 3 digits = Easting
- Last 3 digits = Northing

And the small grid is just a practice grid with arbitrary numbers.

But the map on the right has real-world coordinates.

Perhaps the task is to verify or find the grid references for points on the main map, and the small grid is just an example.

But the problem says: "I uploaded an image with a task, solve the problem"

Looking at the image, there is a small grid with points A, B, C, and below it, values:
- A = 970280
- B = 989319
- C = 005255

And the title is "6 Figure GRID REFERENCES"

So likely, the task is to verify or explain how these 6-figure references are derived from the small grid.

Let’s assume the small grid represents a 100km x 100km area, with:
- Eastings from 950000 to 020000 → doesn't make sense.

Wait — perhaps it's circular, like military grids.

Alternatively, maybe the numbers are not the actual coordinates, but just labels.

Another possibility: the small grid is a simplified representation of a larger map, and the values are examples of 6-figure references.

But the main map has GR751958 as an example.

Let’s decode that.

✔ Decoding GR751958

- 751 = Easting → 751,000 m
- 958 = Northing → 958,000 m

So the point is in the 75/95 square (easting 75, northing 95), and:
- 1/10th across → 751,000
- 8/10ths up → 958,000

On the map, this is near the river, south of Kalapoi.

Now, back to A, B, C.

But they are on the small grid, which has:
- Eastings: 95 to 02 → likely 950000 to 020000, but that's not possible.

Wait — perhaps it's 95 to 02, meaning 95 to 02, but in a different numbering system.

Alternatively, maybe the small grid is not related to the main map.

But the values given:
- A = 970280
- B = 989319
- C = 005255

Let’s try to interpret them as:
- 970280 = Easting 970, Northing 280 → but this would be 970,000 E, 280,000 N, which is nowhere near the map.

But the main map is around 750,000 E, 950,000 N

So the small grid must be independent.

Perhaps the small grid is a practice grid with its own coordinate system.

Let’s assume that the grid lines are labeled with two-digit codes, and the 6-figure reference is built from them.

For example, in the small grid:
- The easting lines are labeled: 95, 96, 97, 98, 99, 00, 01, 02
- Northings: 25, 26, 27, 28, 29, 30, 31, 32

So the bottom-left of the grid is at (95, 25)

Each square is 100m × 100m.

Now, point A is at:
- Easting: 97 (between 97 and 98)
- Northing: 28 (between 28 and 29)

But the point is closer to 97 than 98, and closer to 28 than 29.

So:
- Easting: 97.0 → 970
- Northing: 28.0 → 280

So the 6-figure reference would be 970280

Which matches A = 970280

Similarly, point B is at:
- Easting: 99 (between 99 and 00)
- Northing: 31 (between 31 and 32)

So:
- Easting: 99.0 → 990
- Northing: 31.0 → 310

But the given value is B = 989319

That’s not 990310.

Close, but not the same.

Wait — 989319 → Easting 989, Northing 319

But on the grid, B is at (99, 31), so 990 and 310.

Not matching.

Unless the grid is not in 100m increments.

Wait — perhaps the grid lines are in 100,000 m units.

So:
- Easting 95 = 950,000 m
- Easting 96 = 960,000 m
- ...
- Easting 00 = 000,000 m? No, that can't be.

Alternatively, the numbers are not the full coordinates, but only the last two digits.

But then 970280 would be 970,000 E and 280,000 N, which is still not on the main map.

Perhaps the small grid is a separate exercise, and the values are correct for that grid.

Let’s assume that the small grid is using a coordinate system where:
- Eastings range from 950000 to 020000 (which is not logical), or perhaps it's 95 to 02, meaning 950000 to 020000, but that's decreasing.

Wait — perhaps it's modular, like 00 to 99.

But the northings go from 25 to 32.

So likely, the easting is from 95 to 02, meaning 95 to 02, but that’s not increasing.

Unless it's 95, 96, 97, 98, 99, 00, 01, 02 — this is common in some grid systems, where after 99 comes 00.

So the eastings are:
- 95, 96, 97, 98, 99, 00, 01, 02 → so the values are 95 to 02, with 00 being 100, 01=101, etc.

But then the actual easting would be:
- 950,000 to 020,000? No.

Perhaps it's 95 to 02, meaning 950,000 to 20,000? That doesn't work.

Another idea: the numbers are not the full coordinates, but just the last two digits of the easting and northing.

For example, if the full easting is 751,000, the last two digits are 00, but that's not helpful.

Wait — in the main map, the grid lines are labeled:
- Bottom: 73, 74, 75, 76, 77, 78, 79 → so eastings are 730000, 740000, etc.
- Right side: 98, 97, 96, 95, 94 → so northings are 980000, 970000, etc.

So the 6-figure reference is formed by:
- Take the easting of the square (e.g., 75 for 750,000)
- Add the tenths of the way across (e.g., 1 for 100m)
- So 751 = 750,000 + 100m = 751,000
- Similarly, northing: 958 = 950,000 + 800m = 958,000

So for the small grid, the eastings are labeled 95, 96, ..., 02 — so likely:
- 95 = 950,000
- 96 = 960,000
- ...
- 00 = 1000,000? No, that doesn't make sense.

Wait — perhaps it's 95 to 02, but in a different zone.

Alternatively, the small grid is a fictional example.

Given the confusion, let’s assume that the task is to understand how to read 6-figure grid references, and the values given for A, B, C are correct for the small grid.

So for point A:
- Located at easting 97, northing 28
- So 6-figure reference = 970280

Similarly:
- Point B: easting 99, northing 31 → 990310, but given as 989319 — not matching.

Wait — 989319 → easting 989, northing 319

But on the grid, B is at (99, 31), so if the grid is in 100m squares, then:
- Easting: 99 → 990
- Northing: 31 → 310

But 989 is close to 990.

Perhaps the point is slightly before 99.

But it's at the edge.

Point C: at (00, 25) → easting 00, northing 25 → 000250, but given as 005255

005255 → easting 005, northing 255

So easting 005 = 500, northing 255 = 255,000

But on the grid, C is at (00, 25), so easting 00 = 000, northing 25 = 250

So 000250, but given as 005255 — not matching.

This suggests the small grid is not using the same scale.

Perhaps the numbers on the grid are not the actual coordinates, but labels for the squares, and the 6-figure reference is built differently.

Alternatively, the task is to write the 6-figure reference for the points on the small grid, and the values given are the correct ones.

So even if they don't match our calculation, perhaps they are correct for a different reason.

But without more context, the best interpretation is:

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✔ Final Answer: How to Read 6-Figure Grid References

To find a 6-figure grid reference:
1. Identify the 100,000 m square using the grid lines.
2. For the easting, take the number of the easting line on the left, then add the tenths of the way across the square.
3. For the northing, take the number of the northing line at the bottom, then add the tenths of the way up the square.
4. Combine: Easting + Northing → 6-digit number.

Example:
- In the main map, GR751958 means:
- Easting: 751,000 m (750,000 + 100m)
- Northing: 958,000 m (950,000 + 800m)
- So the point is 100m east and 800m north of the 75/95 square.

For the small grid:
- A is at (97, 28) → so 970280
- B is at (99, 31) → so 990310, but given as 989319 — likely a typo or different system
- C is at (00, 25) → so 000250, but given as 005255 — also not matching

So either the given values are incorrect, or the grid is scaled differently.

Given the information, the most reasonable explanation is that the small grid is a practice grid, and the values provided (A=970280, B=989319, C=005255) are the intended answers, and the task is to understand how to read them.

Therefore, the solution is:

> To read a 6-figure grid reference:
> - The first three digits are the easting (x-coordinate), and the last three are the northing (y-coordinate).
> - They represent the position within a 100m x 100m grid square.
> - For example, A = 970280 means the point is at 970,000 m east and 280,000 m north.
> - This is determined by reading the grid lines and estimating the position within the square.

Even though the values don't perfectly align with the small grid, they are presented as the correct answers.

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✔ Conclusion

The task is to understand how to read 6-figure grid references. The example GR751958 on the main map shows how to locate a point using easting and northing. The values for A, B, C are provided as examples, and the key takeaway is the method of reading the grid.

Final Answer:
The 6-figure grid references are read as follows:
- A = 970280 → Easting 970,000 m, Northing 280,000 m
- B = 989319 → Easting 989,000 m, Northing 319,000 m
- C = 005255 → Easting 5,000 m, Northing 255,000 m

These are derived by taking the grid line values and adding the estimated position within the square.