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: Traditional navigation by slide rule
    From: Alan S
    Date: 2020 May 12, 18:44 -0700


    Perusing through NavList items, I came on yours of 5 Jan, 2016 15:58-0800.

    Re this, I wonder as to whatever happened, if anything, to/with the Navigator's Sliderule project. Time and inclination allowing, would you please bring me up to date regarding the project. Thanks. By the way, respecting the log-log scales on sliderules, I was never on speaking terms with them either, K & E Manuals, as I remember, discussed them and their use.

    Back when I was gainfully employed as a Piping Designer/Draftsman, when we did pipe farbication detaining, we had to give dimensions to 1/16". Respecting developed lengths and offsets, no way to do the trig. involved with a sliderule, and get that degree of accuracy. Back in pre-calculator days, we used Smoley's Tables of Logs and Squares, which you might have come upon. I have seen copies listed in ebay recently. Some of the prices for second hand copies were quite amazing, when I remember what we paid for brand new copies in 1951-1952.

    Take care.

    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