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    Re: Dipmeter: was [NAV-L] Wires, back sights and collimation
    From: Frank Reed CT
    Date: 2004 Dec 1, 21:00 EST
    Alex E wrote:
    "The inverting one has collimation adjustment while
    the upright one has none. The mountings are of course
    absolutely similar.
    Why?
    Is this related somehow with higher magnification
    of the inverting scope? But then why the 6x or 7x prismatic scopes
    of modern sextants don't have it?"
     
    Myself, I can't think of any technical reason. Can you? I suppose simple conservativism of design would be an explanation...
     
    Frank R
    [ ] Mystic, Connecticut
    [X] Chicago, Illinois
       
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