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    Re: Early sextants & Lunars...
    From: Alexandre Eremenko
    Date: 2014 Mar 26, 20:48 +0000

    Bill,
    
    You wrote:
    
    >Most sextants of the time are divided to read to 10 seconds, but it is very 
    difficult to decide which pair or even 3 or 4 pairs of lines coincide when 
    reading > >the verniers. I look either side to see which two pairs just do 
    _not_ coincide and choose the middle value between them.
    
    This depends on the size. Most Heath sextants I've seen on e-bay and elsewhere 
    have 6 to 7 inches radius, while Lecky says:
    "A 6 or 7 inch sextant is of course somewhat lighter to handle, but sailors 
    are not women... The writer's instrument is a 10 inch pillar
    by Troughton..."
    It is certainly easier to read the verinet on a 10" sextant.
    
    Alex.
    
    
    
    

       
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