A Treatise on Military Surveying: Including Sketching in the Field, Plan-drawing, Levelling, Military Reconnaisance, Etc. ; Also a Particular Description of the Surveying Instruments Commonly Employed by Military Men, with Instructions for Using and Adjusting ThemW.H. Allen and Company, 7, Leadenhall-Street, 1846 - 360 Seiten |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
accuracy adjustment altitude artificial horizon barometer base bearing bisect centre chain contour lines convenient correct degrees depression difference of level direction ditto divided divisions draw drawn elevation error fence field-book figure fixed Genil give given line glass ground half height hills inches instrument intersection Lachar laid length longitude mark means measured ment meridian meridian altitude method MIAJADAS miles military sketching minutes move Nautical Almanac necessary needle object observed obtained off-sets operations paper parallax parallel ruler perpendicular picket plan-drawing plane plate position protractor purpose radius reading refraction rhombus right angles river road Royal Engineers ruler screw sextant shade side sine slopes spirit-level square staff station sun's suppose surface survey surveyor taken tangent telescope theodolite tical tion triangle trigono Trigonometrical Survey tube turn vane vernier vernier scale vertical arc yards zero