Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Re: Doug Royer's Artificial Horizon
    From: George Huxtable
    Date: 2005 Feb 26, 00:27 +0000

    Doug wrote-
    The 2 liquid levels are
    >positioned close to the edge and positioned on the top surface of the A.H.
    >on  2 axis.I used a watery plexiglass adhesive to bond the levels to the
    >plexiglass surface.
    From George-
    A snag with bonding the levels in that way is that you are then unable to
    pick them up and turn them end-for-end (a test which inspires confidence).
    Another snag may be that for low altitudes the levels may get in the way of
    the light, unless the plate is rather large. And if the plate IS rather
    large, isn't it better to test with the level the part of the surface where
    the reflection is happening, not another patch near the edge?
    I would be interested to discover what accuracy listmembers have been able
    to achieve when using such solid levelled horizons.
    contact George Huxtable by email at george---.u-net.com, by phone at
    01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
    Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

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

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

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

    Email Settings

    Posting Code:

    Custom Index

    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