## Elements of Surveying and Navigation: With a Description of the Instruments and the Necessary Tables |

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### Common terms and phrases

axis azimuth back-sights base line bearing called centre clamp-screw column comp compass corresponding Cosine D Cosine Sine Cotang course curve decimal degrees determined diff difference of latitude difference of level difference of longitude direction dist divided double meridian distance draw east elongation error example extremity feet field notes figure given line given point ground hence horizontal distance horizontal plane hypothenuse inches instrument intersection LatDegDegDegDeg Distance latitude and departure length line of collimation logarithm M.
M. Sine marked measure method middle latitude miles multiplied parallel parallel sailing passing perpendicular plane of reference plane sailing protractor radius right angles right-angled triangle sailing scale of equal secant ship side similar triangles spider's lines square chains staff subtract surface survey tance Tang tangent theodolite Trigonometry true meridian vernier plate yards