Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Re: Old style lunar (in expert hands)
    From: Fred Hebard
    Date: 2004 Dec 10, 22:20 -0500

    On Dec 24, 2004, at 6:49 PM, Kieran Kelly wrote:
    
    > Its only disadvantage on land is that it is somewhat larger and
    > heavier than a sextant.
    >
    > "Precisely. A theodolite with hardwood tripod legs weighs about 4x
    > times as
    > much as a sextant. Eg I own a Wild T1a theodolite. The combined weight
    > of
    > instrument, carrying case and tripod is 12 kgs. The  Zeiss Yachtsman
    > sextant
    > and case which I use on expeditions weighs 2.8kgs.
    >
    
    A Wild T1 might only weigh 12 kilograms, but the ones used in the 1840s
    for the Survey of India were more on the order of 120 kilograms.
    
    Fred
    
    
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site