A Practical Course of Military Surveying: Including the Principles of Topographical Drawing

1864 by Atchley acclivities altitude angle of elevation azimuth bisect box sextant BRITISH 2 AP canvas centre chain circumferentors clamp clinometer coincides construct contours conventional signs cross-staff difference of level direction A B distance divided division draw employed equal equidistance geodesy give given point graduation ground reconnoitred Gt Russell St hachures height horizontal plane inaccessible inches instrument intersection length lith London Published June means measure the angle meridian methods mile military surveys minute movable diameter needle objects observed obtained officer operation Ordnance Survey paces parallel pencil perpendicular place the ruler plane table planimetry plant a staff Plate position prismatic compass projection projection x protract protractor Published June 1864 relative height right angles rivers roads scale shade sides sight ruler slope station surface take the bearing thalweg topography trace triangle undulations vernier vertical Vincent Brooks wood yards