Map References

 
War Office Cassini Grid

War Office Cassini Grid

 

 

 

We have been asked a number of times about the Map References quoted, the answer is the sytem used was the War Office Cassini Grid which was introduced in 1927. It was used by the Army and RAF throughout the second world war:

As you will have noticed the actual map references only use one letter this is we believe because all of the V2’s landed in the area covered by the lowercase ‘w’.

If you wish to convert any of the quoted references to co-ordinates that can be entered into Google Maps etc please try this site that we are using to convert to co-ordinates we need to produce the maps on our site: FieldenMaps

 

 

 

 

 

 

Extent of Possible Map Errors

Extent of Possible Map Errors

 

 

You should also bear in mind when checking the plots on a map that the 6-figure War Office map references represents a 100 metre square and as far as we can tell the best we can hope for is a +- 200 metres accuracy in converting this reference to current co-ordinates that can be entered into Google Maps so it is our guess that the exact position of the original crater would have been some where in the highlighted area represented in the diagram on the left.

 

 Posted by at 11:52 am

  2 Responses to “Map References”

  1. Hi
    This ref Number (Sheet 31/690365) refers to a Flying Bomb Impact on 24/12/1944 in Grange Moor Wakefield, now new houses I am trying to locate its exact location.
    Thank You.

 Leave a Reply

(required)

(required)

This site uses Akismet to reduce spam. Learn how your comment data is processed.