6 figure grid references on an OS map?

Question

when writing the co-ordinates, do you go across and then up? also, in what order do you put the numbers in, eg if the location was in the square between 65 and 66 would the grid reference be 655? thanks!

Answer 1

Correct in what you have said. As another answer states you go across to the stairs before you go up them. Remember that it is the bottom left hand corner of the imaginary square that you need for the 3rd and 6th numbers in a six figure set of co-ordinates

Answer 2

yes . don't complicate it all , you understand .

Answer 3

You must remeber you go along the bottom and then up the stairs and you always count the line near to the left edge or  bottom edge depending on which side you do first. and your example is right :D

Answer 4

Yes, go across and up as they are like maths co-ordinates. Remember to take the number at the bottom left of the square

If 65 and 66 were at the bottom and 32 and 33 on the side then it would be 65_32_. Fill in the exact figure in the gaps.

I hope this helps.

Answer 5

Accross then up.

You can create a 4 digit reference (like xxyy) from looking at the grid lines either side of the square you want to refer to.

Say it is between 65 and 66 going accross and 9 and 10 going up, then you can say "In square between 65 and 66 accross, 9 and 10 up" - or easier to say "right of line 65, above line 9". Shorten that a bit to say "65 accross 9 up" - join the numbers 65 09 (notice the added 0 before the 9). A basic 4 figure reference.

You can make this more accurate by adding another digit to each  "easting" (accross) and "northing" (up). Each grid square is 1km so a huge area to pinpoint a location - adding extra details can narrow this down to a 100m square.

Imagine the grid split into smaller squares (they arnt printed to make the map easier to read) - 10 along and 10 up each printed grid square. Imagine you are half way accross and 3/4 up - you could say "65 and a half accross, 9 and 3/4 up" or make it into numbers "65.5 accross, 9.7 up" - take out the words, and the dots and join it all up - "655 097" - keep all the going accross  numbers together and all the going up numbers together. Also note that say you are 3/4 up you round down not up to give the imaginary line to the left or below your point.

So in your example, yes, it is 655.

Oh, here is a tip too - in an ordnance survey map, the 1:50,000 scale grid squares are 20mm apart - each imaginary 10th is 2mm,and the 1:25,000 maps the squares are 40mm - each 10th is 4mm. You can measure easily with a ruler to give quite an accurate grid reference (number of mm accross divided by 2 or 4 and rounded down)

Hope that helps.

There are websites that tell you this with pictures and things. You could check this link:

http://www.kirklevingtonexplorerscouts.o...

Hope that helps

Answer 6

OS -

When giving a National Grid reference for any point, always read the distance eastwards (Eastings) before the distance northwards (Northings).  Eastings and Northings must always be recorded in the same number of figures, even if some are zero.

Answer 7

I don't have a lot of experience with OS maps, but would like to clarify that not all coordinate systems are the same. If you are looking at Lat/Long, when reading the coordinate at the bottom of the map, the absolute values increase left to right in the Eastern hemisphere and right to left in the Western hemisphere. In the UK, since the 0 degree meridian splits the country, anything to the left of Greenwich is either negative numbers or increasing right to left preceded by the hemisphere notation (W or E). Same logic applies going north south, with the simetry line being the Ecuator.

In any projected coordinate system the values increase as you suggest.

Answer 8

Remember--------You must get across it before you can get up it. You are correct in your question.