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    Re: What is this Slide Rule?
    From: Noell Wilson
    Date: 2018 Jul 15, 07:44 -0700

    Hi David
    As others have pointed out, this is likely a Fuller slide rule.
    I’ve included some pages from a 1919 Dietzgen catalog of engineering and surveying instruments. No price list available.

    It’s interesting that the other slide rules offered were none of the biggest names from the 1960’s.
    I see Phillips, Multiplex, Mannheim, Union, and Thatcher & Scofield( in photo). Later Thatcher rules were cylindrical but this one is 24” long with multiple slides.
    Regards, Noell

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