hello everyone in this video we're going to be looking at grid references by the end of the video I would like everybody to know what grid references are and when to use them and also to be able to use four and six-figure grid references the basic purpose of a good reference is to locate things in a map they tell us where something is on the Ordnance Survey maps we use these imaginary lines which we call grid lines and they divide the map into grid squares these lines can give us a location of something either using a four figure reference or a six figure reference there are two different types of grid lines some that run vertically upwards these we call eastings because their number increases as you move towards the east and the second type we call northings the other horizontal lines and that's because their number increases as you move towards the north now let us examine exactly how these grid references work ah what I'm adding now is I'm adding the eastings so these are the vertical lines and you can see it that I'm given them a number they have to be two numbers to be able to fit in with the proper way of working out good references in this case I'm running from 0 3 all the way up to 0 7 we start from the left hand side of here so 0 3 would be the first one that we would read and we read going a long ways now I'm gonna be adding in the northern these are the horizontal lines that we read second in this case the numbers don't have to be the same or follow the same sequence so I'm going with 23 24 25 and 26 just to make it a little bit different and we read the know things a second now look at this yellow box if we want to tell where this yellow box is on a grid the first thing that we need to do is we need to read eastings we check 0 free no there are 4 no there are 5 there are 5 is the first line or the first easting that comes into contact with spocs and then we work our way up to 3 to 4 to 5 is the first norming line that comes into contact with this box therefore this yellow box would be a grid reference zero five to five however this only tells us a large area now on a map this area could be very large in size it could be a few kilometers squared so if you want to be a little bit more precise we have to break down each of these squares into sub sections as you can see I'm adding them now in reality these on a map would not exist you would not be able to see them and therefore you'd have to mentally put them in there or at least use your ruler to work them out what I've done is I've divided up the space between zero four and zero five eastings into ten equal parts and I've divided up the space of the northings between two four and two five again in ten equal parts making a smaller grid reference over here now if we want to find this more precise yellow square or say a feature or a symbol that's found in this area what we have to do is we have to ensure that we read it in exactly the same way firstly we start by finding the area in this case it is 0 4 2 4 then after the 0 4 we have to work out which section inside this creatives so B 0 4 1 2 3 4 5 6 7 there we go 0 4 7 and then we work our way up to 4 1 2 3 4 or I started a bit wrong 5 6 let me go I should have started one from here so it'd be zero seven two four six in assistance all right this is now a proper Ordnance Survey map the grids are not as clear to see you can see these blue lines over here these are the eastings and then we go these are the northings we start over here from 82 and we start over here from 21 now let us presume we want to find the grid reference of this square we start from the left hand side to try and identify the first easting that comes into contact with the square and as we read along we come in to contacted over here 87 so the first part of the fall think a good reference would be 87 then we start reading the novels the first northing that comes into contact over here is 26 so the grid reference for this square is 8 7 to 6 we want to be more precise and we want to find this parking over here we can see that it's 87 I'm probably 8 7 8 this point here 2 6 and I would say 3 so 8 7 8 2 6 3 now sometimes on a our grid reference you have to be a little bit careful about symbols as an excellent over here do we see this caravanning camping site now the symbol is actually at grid reference 8 8 1 2 6 9 or 2 6 8 but that's not the grid reference of where this is found in real life do we see this little line that's coming from it this is trying to indicate exactly where it's found sometimes in Ordnance Survey maps you can't fit the symbols into the right area our voice if it gets too crowded so they will put them off in a spare bit of the map like this one and then connect it with an arrow so be very careful about that so the caravan and campsite that you can see over here is actually not found in the the four-figure good reference eight eight to six but is found exactly over here where my laser pointer is looking at now you can see a similar situation with this telephone box over here it's just one of those things that you need to look out for if you found this video useful please press like and if you like this type of content and you'd like to see more please subscribe to my youtube channel thank you very much for watching and I hope you have a really great day