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THE EARTH INDUCTOR AND OTHER CoMPAsses
11 other sections not shown
accurate air speed aircraft airplane altitude amount appear avigation azimuth beacon bearing body Book bubble called causes celestial chart circle civil clouds compass computed correction course curves dead reckoning declination determined developed deviation diagram difference direction distance drift earth east equal error field Figure fixed flying force give given Greenwich ground speed heading horizon hour angle indicator known landing latitude less light Line of Position Long longitude magnetic marked means measured meridian method miles moves Nautical navigation necessary noted observed obtained operation passing pilot plane plotting pole practical pressure problem radio reading scale sextant shown in Fig shows side sidereal solution star station surface tables tion track true turn usually values variation watch weather wind