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Using an Ordnance Survey grid reference. RRS feed

  • Question

  • I looked at AutoRoute to find out how to input an Ordnance Survey grid reference and it gave the following example 

    "SU 47972 29518".  The problem is that the Camping & Caravanning Club uses a different format such as "185-476 277".  Any advice would be welcome.

    Sunday, August 16, 2015 3:57 PM

All replies

  • AutoRoute's is correct.

    The SU refers to a 100km square.

    The remaining numbers are X,Y coordinates to arbitrary accuracy - yours are to the metre.

    To be honest, the Camping&Caravanning one doesn't make sense. Often in computer usage the 100km square is referenced using simple cartesian coordinates - ie. high order digits as prefixes to the existing coords. Then you just end up with two (longer) numbers of equal length.


    Richard Marsden
    MapPoint Add-ins at Mapping-Tools.com

    Monday, August 17, 2015 6:29 PM