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    Re: Was this optical instrument designed forcelestialnavigation?
    From: John Morris
    Date: 2016 Feb 9, 09:55 -0800

    http://collections.rmg.co.uk/collections/objects/43306.html

    Thanks again Wolfgang.  One test of the nomenclature accuracy might be to do a Google search for the tern.  Your new formal term turns up very little.  The former, briefer term however found an earlier Zeiss version of the instrument in a British museum.  Looking at the provenance, I suspect the donor, who received it aboard a German ship, had taken notes including the German nomenclature name, or perhaps it is marked on the device.  The museum's description of it sounds quite certain regarding the name.

       
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