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: "Improved" sextants
    From: hellos
    Date: 2006 Jul 6, 21:52 -0500

    Greg-
     "Has anyone tried any of the
    ultrasonic measuring devices over water?"
    
     The polaroid devices are perfect for this application but since Polaroid went
    bankrupt and the names/divisions were sold off, I have no idea who sells those
    anymore. Polaroid used to sell evaluation kits for experimenters. I'm told that
    Hawker Sidley actually used the same sensors in the Harrier jump jets, to
    determine "level" attittude during landings.
    
    One of the ultrasound 'tape measures' in the home stores probably would be
    cheaper.
    
    
    --~--~---------~--~----~------------~-------~--~----~
    To post to this group, send email to NavList@fer3.com
    To , send email to NavList-@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    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