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    Re: Snellius Construction questions
    From: Richard M Pisko
    Date: 2009 Jan 14, 22:46 -0700

    On Thu, 08 Jan 2009 14:03:52 -0700, Nicol�s de Hilster  
    > Later on I have been on projects where either station
    > pointers or 'circle charts' were used to solve the position. A circle
    > chart looks similar to a Decca chart, but now covered with circles that
    > resemble the angles measured.
    Are "circle charts" clear overlays for the coastal charts?  Do you center  
    one on each reference landmark, and find the proper intersecting angle  
    lines by eye?
    I have a couple of vague ideas of how that may work, but I could be off on  
    the wrong track altogether.
    For a different approach, cheap station pointers might be made of three  
    clear plastic disks, joined by a hollow rivet at the center, and graduated  
    on the outer periphery in degrees.  Each disk would have one axial line  
    pointing to its zero degree mark.
    However, I much prefer the workmanship in your real station pointers /  
    three arm protractors.  Thanks for posting photographs of them.
    Richard . . .
    Using Opera 9.2.4 after the "Dog" died
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