Subterraneous Surveying with and Without the Magnetic NeedleC. Lockwood & Son, 1898 - 165 páginas |
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Subterraneous Surveying With and Without the Magnetic Needle (Classic Reprint) Thomas Fenwick Sin vista previa disponible - 2018 |
Subterraneous Surveying: With and Without the Magnetic Needle (Classic Reprint) Thomas Fenwick Sin vista previa disponible - 2018 |
Términos y frases comunes
6th column 80 links ABCD ABCDF acre angle formed bearing and distance Bearing Lengths bearing of F centre chains of easting chalk mark circumferentor cloth coal commencing Construction Crown 8vo D. K. CLARK degrees contained direction Engineer equal EXAMPLE Fcap Fix the instrument following subterraneous survey form an angle Formulæ Fourth Edition headways horizontal distance Illustrations Inst instrument whose needle let the bearing magnetic needle magnetic variation magnitude meridian line meridian NS method Mining number of degrees number of tons object will bear plan's meridian Plates plotted Practical Treatise PREPARATORY TABLE protractor remove the instrument Revised S.
E. or W. N. seam Second Edition shaft south magnetic meridian student subterraneous excavation Suppose the bearing surface survey-book surveyor Take the bearing tance theodolite theorem thereon Third Edition traverse tables true meridian W 8 chains W. N. or S.
E. west variation wish to know
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