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    Re: Testing sextant arc error
    From: John D. Howard
    Date: 2017 Jan 17, 09:49 -0800

    David, 

    If someone you know has a transit, theodolite or total station you can get them to shoot landmarks visable from where you can stand then shoot vertical angles.  Another way is to use a good topo map or google earth to get the relative bearings to points that can be seen  - things like cell towers, mountain tops, etc.

    John H.

       
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