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    Re: Determining Actual Time of Meridian Passages Before Computers
    From: Greg R_
    Date: 2007 Jan 14, 12:27 -0800
    Thanks for the replies on this topic. Once I got back on the computer after sending the original query to the list, I did some research on the various surveying and mapping agency sites (NOAA, National Geodetic Survey, etc.) and found a treasure trove of stuff such as references to geodetic transits, Davidson meridian instruments, etc. Seems that my question had already been anticipated and answered several generations ago...  :-)

    Here's a great link on the NOAA site with pics of some of the instruments of that earlier era: http://www.photolib.noaa.gov/historic/c&gs/astro1.html
     
    --
    GregR

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