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Date: 2002-03-18 13:06:26Science United States Naval Observatory Longitude Royal Observatory Greenwich Marine chronometer Meridian circle Sidereal time Benjamin Apthorp Gould Chronometer watch Horology Measurement Time | The Victorian Global Positioning System by TrudyAdd to Reading ListSource URL: www.tbp.orgDownload Document from Source WebsiteFile Size: 836,66 KBShare Document on Facebook |