Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Follow us on Facebook Follow us on Twitter Linked In Flickr Watch us on YouTube Google+
Results 1 to 2 of 2
  1. #1
    Junior Member sadomanone's Avatar
    Join Date
    Oct 2009
    Posts
    1
    Downloads
    0
    Uploads
    0

    will a surveyor be able to convert coordinates from a 1905 survey of a mining...

    ...claim to handheld GPS coordinate? I have a survey and notes from Survey Generals office from 1905 from an old mining claim. Markers were tree's and rocks. The map shows azimuths shot from one common point to corners. This is located in north central nv. can the coordinates be convered to GPS

  2. #2
    Junior Member dougger's Avatar
    Join Date
    May 2008
    Posts
    7
    Downloads
    0
    Uploads
    0
    Yes. You have to identify at least 2 of the corners, or any 2 points. From there you have to figure out the scale and orientation, almost certainly its North.

    Then using whatever coordinates they used you have to figure out how much to add or subtract to get to get you GPS north and east coordinates.

    In many areas an arbitrary point to the south and west was assigned local coordinates of 10,000N and 10,000E (sometimes other coordinates just as convenient were used) . All claims were tied to it and it had the advantage of keeping all trigonometric calculations in the 1st quadrant, and avoiding negatives in the tedious hand calculations. If you can find the local arbitrary starting point the conversion will be much easier. A correction factor was often put in to tie it into the larger state and national grid.


Similar Threads

  1. Replies: 0
    Last Post: 08-24-2010, 08:16 PM
  2. Replies: 0
    Last Post: 06-05-2010, 11:04 AM
  3. Replies: 2
    Last Post: 04-02-2009, 05:01 PM
  4. Replies: 1
    Last Post: 12-22-2008, 09:06 AM
  5. Global Surveyor?
    By steph j in forum Random Interesting Topics
    Replies: 6
    Last Post: 10-22-2007, 08:06 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -4. The time now is 10:53 PM.
Powered by vBulletin® Version 4.2.5
Copyright © 2024 vBulletin Solutions Inc. All rights reserved.