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age of OSI maps ?

  • 25-10-2013 1:58am
    #1
    aidanki
    Registered Users Posts: 1,281 ✭✭✭


    came across this a while ago

    http://maps.osi.ie/publicviewer/#V1,591271,743300,0,10

    in bottom right hand corner I have the option of choosing what map I want

    my question is what age are the historic 6" and what age are the historic 25"


Comments

  • #2
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,221 Mod ✭✭✭✭slowburner


    aidanki wrote: »
    came across this a while ago

    http://maps.osi.ie/publicviewer/#V1,591271,743300,0,10

    in bottom right hand corner I have the option of choosing what map I want

    my question is what age are the historic 6" and what age are the historic 25"
    The 6" dates from 1838-40 and the 25" from c. 1860. Also known as the first and second editions.


  • #3
    aidanki
    Registered Users Posts: 1,281 ✭✭✭aidanki


    slowburner wrote: »
    The 6" dates from 1838-40 and the 25" from c. 1860. Also known as the first and second editions.

    is that 6" 1838-1840 the oldest map that is available of this country

    the area I am interested in is north kerry


  • #4
    lottpaul
    Registered Users, Registered Users 2 Posts: 1,165 ✭✭✭lottpaul


    slowburner wrote: »
    The 6" dates from 1838-40 and the 25" from c. 1860. Also known as the first and second editions.

    Is the 25" more recent? or was it reviewed at some stage? I only ask because it clearly shows the full Tralee to Dingle railway which only opened in 1890/91. Likewise the line to Achill - opened 1895 - is shown.


  • #5
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,221 Mod ✭✭✭✭slowburner


    aidanki wrote: »
    is that 6" 1838-1840 the oldest map that is available of this country

    the area I am interested in is north kerry

    With any degree of accuracy, yes.


  • #6
    dogmatix
    Registered Users, Registered Users 2 Posts: 1,404 ✭✭✭dogmatix


    A thing to note with the 25inch map views is that as you zoom out the map age changes so at the lowest level it can be late 19th century but zooming out the map becomes much earlier. Example - Dundrum in Dublin: at maximum zoom it clearly shows the railway line but zoom out a few clicks and line is gone as well as a lot of the houses.


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