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12![Build a Simple Sextant Purpose: To measure the height (altitude) of a celestial object above the horizon. To observe the apparent motion of stars, the Moon, planets, or comets by noting changes in altitude over a period Build a Simple Sextant Purpose: To measure the height (altitude) of a celestial object above the horizon. To observe the apparent motion of stars, the Moon, planets, or comets by noting changes in altitude over a period](https://www.pdfsearch.io/img/e46490535bc9f808bde177e8619039e0.jpg) | Add to Reading ListSource URL: solarscience.msfc.nasa.govLanguage: English - Date: 2006-04-21 12:57:30
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14![San Juan County Community Development & Planning 135 Rhone Street, P.O. Box 947 Friday Harbor, WA[removed][removed]2116 Fax[removed]removed] | www.sanjuanco.com San Juan County Community Development & Planning 135 Rhone Street, P.O. Box 947 Friday Harbor, WA[removed][removed]2116 Fax[removed]removed] | www.sanjuanco.com](https://www.pdfsearch.io/img/bbd37acbfd229ed72b10951a9a837b9f.jpg) | Add to Reading ListSource URL: sanjuanco.comLanguage: English - Date: 2011-07-08 17:44:06
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15![Trimble_Cutting_Edge_Technology Trimble_Cutting_Edge_Technology](https://www.pdfsearch.io/img/da0781c4003e08d58d7d6605a0a52d60.jpg) | Add to Reading ListSource URL: www.clge.euLanguage: English - Date: 2014-03-28 09:27:41
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16![kent_health_logo_pms300-2 kent_health_logo_pms300-2](https://www.pdfsearch.io/img/4d83f81461d39bd3ae219fcf1116832c.jpg) | Add to Reading ListSource URL: www.kenthealth.comLanguage: English - Date: 2013-11-24 18:12:24
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17![Surveying Equipment Basics Document Number: 1360 Surveying Equipment Basics Document Number: 1360](https://www.pdfsearch.io/img/f40d691f246dd5759bb262406e0b7f14.jpg) | Add to Reading ListSource URL: www.benmeadows.comLanguage: English - Date: 2013-02-14 11:32:29
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