A Course of Military Surveying: Including Instructions for Sketching in the Field, Plan Drawing, Levelling, Military Reconnoissance, Etc., ... Also a Particular Description of the Surveying Instruments, Commonly Employed by Military Men in the FieldW.H. Allen, 1841 - 360 pages |
Contents
ON SURVEYING AND SKETCHING WITH THE PRISMATIC | 1 |
Method of Surveying a Road by the Compass | 5 |
Of the simplest Method of Sketching a portion | 9 |
29 other sections not shown
Common terms and phrases
accuracy adjustment altitude artificial horizon bisect centre chain compass contour lines convenient correct cosine degrees depression difference of level direction distance divided draw equal error field-book fixed give given line glass Granada ground half height hills horizon-glass horizontal circle horizontal line inches instrument intersection Lachar latitude length limb longitude Malaga mark means measure meridian meridian altitude method miles military sketch minutes moon Nautical Almanac necessary needle object observed angle obtained off-sets operations paces paper parallax parallel parallel ruler perpendicular picket plane plate protractor purpose radius reading refraction rhombus right angle road ruler scale screw sextant side sine Sir George Murray slopes spirit-level square staff station suppose survey surveyor take the bearing tangent telescope theodolite tion triangle trigonometrical Trigonometrical Survey tube vane vernier vernier scale vertical arc yards zero