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    Re: Kollsman periscopic sextant mount
    From: Dave Walden
    Date: 2020 Sep 21, 15:49 -0700

    I've heard it as metric and ones that have operated rovers on Mars.

    Try an 8- 32 because there are two kinds of countries, ones that use the metric system, and ones that have been to the moon.  I just mounted my well-used mount from Quonset on a 1/4" aluminum plate and mine was 8-32 threads.

       
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