Amateur craftsman's cyclopedia

Amateur craftsman's cyclopedia

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Drawing of parts and dimension necessary in making your own sextant Complete seismograph and recorder. Earthquakes from 200 to 6, 100 ... In a professional sextant, this telescope, of course, contains lenses. With care in constructing your anbsp;...

Title:Amateur craftsman's cyclopedia
Publisher: - 1937


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