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  1. #1
    Junior Member
    Join Date
    Apr 2013
    Posts
    23

    Default Need a Surveyor assistance, converting Lat & Long to NZTM Coordinate

    Hi there

    Ive a Garman GPS unit that gives Lat & Long coordinates, but need to converting to NZTM Coordinate Easting *& Northing.

    Nothing in the Online Converters mages sense som I seeking assistance, please.

    I need convert this reading from my Garmin Explorer + 45.040563 and 169.184400 into NZTM

    Ive many of these to convert as Im assisting a Heritage Trust on their archaeological database updating.

    Thanks in anticipation.


    John.

  2. #2
    Old dick-head
    Join Date
    Jan 2007
    Location
    between Lower Hutt & Carterton
    Posts
    1,229

    Default Re: Need a Surveyor assistance, converting Lat & Long to NZTM Coordinate

    Have you tried looking at https://www.martindalecenter.com/Calculators.html

    There is over 20 thousand types of calculator there on line or links to other sites.

    Very useful, not just to you but all of us.

  3. #3
    Junior Member
    Join Date
    Apr 2013
    Posts
    23

    Default Re: Need a Surveyor assistance, converting Lat & Long to NZTM Coordinate

    Trouble is, I dont know what format Garman readout is, nor NZTM.

  4. #4
    Soaring like an Eagle gary67's Avatar
    Join Date
    Aug 2007
    Location
    In a field in Hanmer
    Posts
    14,929

    Default Re: Need a Surveyor assistance, converting Lat & Long to NZTM Coordinate

    I have a word document that I made a few years ago that explains this, check your private messages

  5. #5
    Wrinkly Member! B.M.'s Avatar
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    Dec 2004
    Location
    Mount Maunganui
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    8,198

    Default Re: Need a Surveyor assistance, converting Lat & Long to NZTM Coordinate

    Quote Originally Posted by jhw View Post
    Trouble is, I dont know what format Garman readout is, nor NZTM.
    Firstly, the Datum of your original map must be known.

    If your GPS uses the WGS-84 Datum, (which most do) then the NZGD2000 Datum is near enough, unless you want to be pedantic.
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