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    Re: The Wild T4 Theodolite - Don't Sneeze!
    From: Bill Morris
    Date: 2016 Mar 29, 16:20 -0700

    <<How do they manage that?>>

    65 power telescope, precision central bearing, large circle engraved on glass, optical micrometers, simultaneous readings on opposite ends of diameter, repetition, and very great care in making readings.

    Bill Morris

    Pukenui

    New Zealand

       
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