Don Casey - Dragged Aboard Storm Tactics Handbook:
Modern Methods of Heaving-To for Survival in Extreme Conditions
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Re: Drum Sextants

From: Robert Eno (no email)
Date: Wed Jun 15 2005 - 14:16:56 EDT

  • Next message: Robert Eno: "Re: Drum Sextants"

    I can't offer a learned opinion, except to say that in my experience, being able to resolve angles to a tenth of a minute of arc seems to be overkill and perhaps expecting too much of the human eye and brain. I own a C.Plath which takes it to two tenths, but if I really want to, I can resolve it to 1/10th when the two venier lines on the rotating drum are bracketted between two lines on the fixed portion. Sometimes I fool myself and use thi

    If I am not mistaken in my recollection, I do believe that Cassens and Plath sextants are graduated in tenths of a minute.

    Ok. I have my flak jacket donned. Let 'er rip.....

    Robert
      ----- Original Message -----
      From: Mike Burkes
      To:
      Sent: Wednesday, June 15, 2005 1:18 PM
      Subject: Drum Sextants

      HI folks, In continuing this thread I posed this question a while back regarding the division of the micrometer minute scale into tenths.
      I have always wondered why super quality sextants like some Plaths and others do not have their minute scales further divided into tenths.
      I would appreciate any feedback regarding that and thanks much!
      Mike Burkes


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