| Customization: | Available |
|---|---|
| Occasion: | Father′s Day,Thanksgiving, Other |
| Material: | Metal |
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American compass/Multifunctional compass
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color:army green/ camouflage material:zinc alloys closed size:85*63*30mm open size:162*63*20mm weight:175g |
Structure and performance :1. Azimuth measuring mechanism: composed of compass, illumination gate and quasi-star. Azimuth division outer ring is 360° division system, A minimum lattice value of 2°; The inner ring is 60-00, Minimum lattice value 0-20 secret bits. The conversion of density and degree is shown in the table. Measurement accuracy :±0-10 secret position ±1°2. Distance estimator: consists of a camera door and a quasi-star. The angle between the two tips of the star and the center edge of the gate is 1-00, 12.34 mm long between the tips, 123.4 mm long, That is to form a 10:1 proportional range estimator. The measuring precision is 5%3. Pitch angle measuring mechanism: it is composed of pitch table plate, pitch pendulum, mirror, The measuring range is ±90°. Measurement accuracy ±2.5°4. Coordinate ladder: consists of one side long ruler and two sides short ruler perpendicular to each other, The ruler is 120 mm long. Accuracy of measurement :±0.5 mm
Use operation :1. Measure azimuth: expand the north needle, Rotate the azimuth frame so that the calibration line on the azimuth glass is relatively positive with the orientation index, An oblique (45°) one-eye view is directed towards the target through a quasar, From the reflection of the mirror, we can see the orientation of the magnetic needle N pole, You can read the target azimuth, And then turn the azimuth frame with your right hand so that the calibration line on the azimuth glass is aligned with N magnetic needle, The angle between the direction index and the azimuth glass scale is the target azimuth angle (calculated clockwise). Open the finger needle, Calibration of maps (not calibrated when ranging), Insert a pin at the reference point, Turn the North needle, Cut the side edge to the target point, The azimuth from the reference point to the target point can be judged. 2. Calibration Map: Unfold the North Needle, Turn the azimuth frame, Align the scale line on the azimuth frame with the orientation index (note the correction of the magnetic deflection angle), Flatten the compass on the map, At one end of the planet toward the map North pole, So that the coordinate ladder length and map magnetic meridian tangent, By turning the map to align the magnetic needle N the scale line on the azimuth glass, At this point, the map has been calibrated. 3. the direction of the march toward the masked target: the spreading finger is on the map, I stand on the map and march on the map, At this point, the direction index refers to the direction of the march. Turn the azimuth frame so that the (S,N) direction on the azimuth glass is consistent with the (S,N) direction on the map, Then write down the azimuth reading of the direction indicator, In the face of the direction indicator pick up the North needle and rotate the body, Align the N pole of the magnetic needle with the calibration line on the azimuth glass, At this point through the star gate forward, The objects on the alignment line (such as woods, houses, etc.) can be used as auxiliary targets in the march direction, After recognizing the auxiliary goal, you can advance before. Close the finger needle into the bag, But don't turn the azimuth frame, Once you reach the auxiliary target, you can find a new auxiliary target to move on, Until the destination, Always check the direction reading along the way. 4. the interval between known targets, Estimate the distance between the target and the standing point :1 aiming at the target through the left and right tips of the gate and the quasi-star, According to the multiple of the width between the right and left tips of the target, Estimate the distance of the target according to the proportional formula of 10:1. The distance between the target and the standing point (m)= the width of the target interval (m) x10/ the multiple of the width of the two tips of the target interval: there is a road ahead parallel to our position, Find the distance between the highway and the position. Electric poles along the road, The distance between poles is 50 meters, Five poles at the left and right tips were measured with a distance estimator, That is, every two rods occupy a quarter of the distance between the left and right tips. The distance between highway and position =50 x10x4=2000 m
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