Work on the ground

Note on the tablet starting point standing, applied to a plan for the line route, which by measuring pencil-box determine the azimuth direction. Here's how: Insert the person to viziruemomu object and holding foam on the chest or waist, sending him on the subject so that the compass was closer to the observer. Then combine the mapping feature of the rod with a line of sight in the mirror and rotate with pencil boxes, trying to catch the desired object on the line of sight. Next, take a count against the northern end of the compass needle, thus obtaining, a magnetic azimuth to the subject from this point of standing. Then a pointer to the disk combined with the appropriate division of specific azimuth on the limb, summing line to a point and standing on the edge of the slider to hold the line on my own - a line of traffic. Turning to the next point standing, take a reading of pairs of steps, then in accordance with the scale of lay the distance traveled. Then find the direction to the next point. Thus, the tablet is put the whole line of route. It is desirable at all points to take control back azimuths. When applied to the plan area, located on both sides of the line route, the method of compass serif with two points: these points determine the azimuth of the most notable landmarks and plot them on the tablet as described above. Point of intersection of lines indicate the position of these items on the plan. Serif is better to check the correctness of the third direction: if all three lines intersect at one point, the notch is true and if we get a triangle, then applied a landmark in the middle of it. When resection measured azimuths of all lines are translated in reverse and deposited in the appropriate locations. Intersections and will place standing. The highest accuracy is achieved at angles of 60 to 90 °. Made when applying for a plan of the next point the error increases with the length of stroke: the longer the course, the error is larger. Therefore, the distance between two points is better to take as little as possible to the damage to plan the course between two points was the scale of the withdrawn route 2-4 cm in this case, the error in applying the point is minimal. When glazomernoy route survey, when applied only path to follow and the terrain on both sides by 250-300 m from it (visually or by compass serif), the use of the tablet of the proposed design provides sufficient accuracy (maximum permissible error of 10%). In addition to these operations, with a tablet you can find earlier inflicted azimuth directions, for what follows, turning circle, draw a line defined by the direction of the slider, positioning it along its edge, and against the pointer to take count of the brim. Using the included tablet for measuring pencil-box can produce some necessary when taking work on the ground: determine the height of the subjects of a hill, slope, geographic latitude, measure the width of the river, to determine the distance by eye, using the pencil-box glued to the edge of the scale range finder, use foam as ordinary compass for orientation on terrain. In carrying out geological works foam can be used as a geological compass to determine the incidence, stretch folds of rocks.