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

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### Common terms and phrases

acres axis azimuth base line calculated called centre clamp-screw column comp compass corresponding course curve degrees determined diff difference of latitude difference of level difference of longitude direction divided double meridian distance draw east or west error example extremity feet field notes figure find the area ground half hence horizontal plane hypothenuse inches instrument intersection latitude and departure length line of collimation logarithm marked measure method middle latitude miles multiplied natural sines needle opposite station paper parallel parallel sailing parture passing perpendicular piece of land plain-table plane of reference plane sailing PROBLEM protractor radius right angles sailing scale of equal side sights similar triangles spider's lines square chains square rods staff subtract surface survey take the bearing tance Tang tangent telescope theodolite true meridian vernier plate yards