http://www.parallaxinstruments.com

Parallax Instruments, Inc. | Quality Telescopes, Rotating Rings, Tubing, and Mor...
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Parallax Instruments, Inc. specializes in Rotating Rings and Standard Hinged Rings, Large Aperture Newtonian Telescopes, Classical " Dall-Kirkham Cassegrain Telescopes, German Equatorial Mounts, Aluminum Tubing, and Portable Piers.ial mountings, aluminum tubing, piers, and the world's most extensive selection of tube rings. Arme...
[仪器、仪表] - www.parallaxinst*uments.com - UTF-8 - 2014-02-20

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