1898 W/S USNO Transit
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  1. #1
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    Post 1898 W/S USNO Transit

    Getting a little drafty and cold in this neck of the Forum.... Here's a little W/S History.
    Transit was built in 1898 and used until 1998.



    The 6-inch Warner & Swasey Transit Circle — Naval Oceanography Portal

    The need for precision cylindrical machining lead directly to developing robust and precise machines.

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    Hey YA'll,
    So if this critter is graduated in "7200" arc seconds, is it fair to assume that its graduations are mil radians ?
    Stay safe
    Calvin B

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    Quote Originally Posted by calvin b View Post
    Hey YA'll,
    So if this critter is graduated in "7200" arc seconds, is it fair to assume that its graduations are mil radians ?
    Stay safe
    Calvin B
    I do not know the answer to your question. Hell, I do not understand your question !
    But I do know this: A key to the success of W / S in the early days was the ability to make a machine that could graduate a scale accurately enough to beat most all others. I caught a glimpse of that machine in 1972, just prior to it being shipped to the Smithsonian in DC. I wish I had paid closer attention: I have never been able to find out more about it.


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