| product manual || |
Metallic material, filling the interior, pointing to stable compass minimum degree is 1 degree with a magnifying glass to see three times the azimuth scale. Fringe ruler for easy measurement of distance behind the compass can also be fixed on a tripod. horizontal position but also with the level of beads, measuring azimuth position when water droplets in the direction of the middle dot is the most accurate. construction and performance
1, the azimuth measuring mechanism by the compass and so on, according to the door and the front sight is composed of an outer ring bearing partition 360 ° division system, the minimum grid value 2 °;. The inner ring is 60-00 mils partition system, the minimum grid value 0- 20 mil accuracy:. ± 0-10 mils ± 1 °
2, from the assessment is made according to the door and the front sight and other components. Sight as the door center and two tip edges angle of 1-00 mils, between the two tip length of 12.34 mm, between the door and the front sight according to length of 123.4 mm, that is composed of 10: 1 ratio ranging assessed measure accuracy of 5%.
3, the pitch angle measuring mechanism by the tilting table plate, pitch swing, head mirror, whose range is ± 90 °.
Accuracy ± 2.5 °
4, foot ladder coordinates
By the side of one foot in length perpendicular to each other and both sides of the foot consisting of short, one-foot length 120 mm measurement accuracy:. ± 0.5 Haomi
Using the Operation
1. Measured Azimuth:
Expand compass, turn the box so that the orientation and direction indicators tick marks on the glass orientation relatively positive, the head-mirror diagonal (45 °) by monocular sight pointed at the target, see the needle N pole head-on against the word from the mirror table cards bearing partition, either read the target azimuth, then with his right hand to rotate the orientation of the frame so that the orientation of the tick marks on the glass and align the needle N pole, the direction indicators and azimuth angle at this glass scale line is sandwiched between the target azimuth (measured clockwise).
Open compass calibration good map (ranging from time calibration map), in the figure inserted a reference point acupuncture treatment,
Rotating compass, ruler of the side cutting edge at the target point, you can interpret the reference point to the target point azimuth.
2. Calibration map:
Expand compass, turn the azimuth box, so that word and tick box on the azimuth direction indicators align (note magnetic declination correction), the compass flat on the map, the map of the Arctic towards the end of sight, so that the coordinates ladder feet long and map magnetic meridian tangent, rotate the map so that the needle N pole position aligned with the tick marks on the glass, then maps already calibrated.
3. seek to mask the target traveling direction of march: Expand the compass on the map, so I figure scale mapping footing and march through the target, then the direction of the index refers to the direction of travel should be rotated so that the orientation of the orientation of the glass box. (S, N) is consistent with the direction of the (S, N) directions on a map, and then note the direction indicators referred azimuth readings, facing the direction of rotation of the body index picked up the compass so that the needle N pole position with glass tick marks on the alignment, this time through the front sight is aligned according to the door forward, aligned with each object in this line (such as trees, houses, etc.) can be used as an auxiliary march direction goal after goal to recognize secondary to find a new pair of auxiliary rear forward. Close bagged the compass, but do not block the rotation position, the assistant objectives go ahead until reaching the destination, along the direction readings should always check
4. known target interval estimate from the target to the standing point between:
① according to the door and front sight aiming through about two tip target, based on a multiple intervals of about two percentage sight target tip width ratio of 10: 1 formula to estimate the distance from the target and the target stand point (m) = Target. space width (m) x10 / target interval representing a multiple of the width of the tip of the front sight two
Example: in front of a position parallel to the road with us, find the distance and position of road.
There are poles along the road, between the pole distance of 50 meters, the distance is measured assessed around two poles there are five tips that every two intervals accounted for about 1/4 between two cutting-edge distance according to the proportion of the Formula too:
The distance between the road and the position = 50x10x4 = 2000 Mi
② auxiliary Determining the target distance
According to the door with a sight at the target, turn the azimuth box lets tick positive needle N pole, note the azimuthal direction indicator readings indicated then to the left or right-angled direction (ie, the original reading position difference 15-00) Looking for a secondary
Help point by pacing or other methods, measure the distance from the auxiliary point-to-point standing in the auxiliary point compass and then align the original target by sight according to the door, the same rotational orientation of the frame so that the mark aligned with the needle N pole write down the reading direction indicators referred angular difference between the stand point readings from the auxiliary point to the front and rear according to the direction of the two, can check Schedule II
It was the target distance.
If the difference between the above two direction angle readings 7-50 (ie, 45 °), the target distance is equal to the distance from the auxiliary stand point to point.
5. measuring pitch angle:
We will rely on face down, with the front sight targeting according to the door, through the head-mirror pitch angle reading; or to stand on a flat surface by measuring the angle of inclination of the plane.
6. Measure height:
Using maps and altimeter to measure the height from the stand point on the map Richard horizontal distance to the target, and then measured the pitch degree compass, altimeter isolated by height, can also be calculated trigonometric example: to seek base of the mountain Peak height.
Isolated hilltop with a standing point on the map from a horizontal distance of 100 meters, measured with a compass summit elevation is 40 °, 40 ° and then check altimeter control at 100 meters, may have a height of 83.91 meters.
7. measured on the map mileage between any two points: Earth's north and south magnetic poles ① orientation is not just north-south direction of Earth, so the needle within the meaning of the north-south direction, with the true north-south direction with a deviation angle, this deviation angle is called magnetic declination, which varies around the value in
Different scale maps, which ri network side and the field is calculated from the relationship
1: 25,000 map: Distance = (amount was a few millimeters / 4) X100 (meters)
1: 50,000 map: Distance = (amount was several millimeters / 2) X100 (meters)
1: 100,000 map: Distance = amount obtained in millimeters X 100 (m)
8. The magnetic declination measurements:
Accurate measurement is not required, the needle can be referred to as real direction north, where precise measurements, it will check the location of magnetic declination book, according to the direction indicated by the compass, calculate the true north-south direction. As when using the compass in Changsha, Changsha Fourth Schedule of the investigation of the magnetic declination is 2 ° 41 '(W), that is to say in Changsha, the needle is referring to the north west of true north partial 2 ° 41' of the place.
② anywhere declination Seeking.
In the night skies, expand the compass, turn the azimuth box, the upper bearing glass (N) the word is on the direction indicators used according to the door, front sight, head mirror and luminous signs are on Polaris, the same compass direction, shall mean Northern flat needle, the needle at this time is the location of the North Pole within the meaning of reading magnetic declination.
1, and do not use when placing a compass near the ferromagnetic objects, and electromagnetic devices such as high-voltage lines to avoid errors and reduce the sensitivity of the compass.
2, when not in use, should be placed in ventilated, dry place, in order to avoid mildew.
3, flat as a mirror, against the word table-holders do not twist, so as not to affect its accuracy.
4, each surface dirt, available white flannel graze surface, to keep the surface clean.