• Product Information
• name: American army green compass
• number: S-100
• color: Army green/black
• material: zinc alloy
• size: 100*66 * 31mm
• packing: OPP bag + canvas bag + carton
• logo: support customized
• purpose: position positioning, azimuth identification, slope measurement, length and width of target object measurement, deviation angle measurement

• product Features
• compass (Compass), level gauge, scale gauge, range finder, Inclinometer, simple drawing

product Introduction

1. Metal dial

2. 360 du turntable

3. The dial

4. North Line and North Arrow

5. The glass

6. The distance scale

7. The line-of-sight

8. The cover

9. The base

10. The hinge

11. The reading lens

12. The grip ring

13. The level

14 The screw hole and a tripod

15. The Centre support

16. Adjustable reading lens

installation Instructions

take the compass out of the box and open the cover (8) with the line of sight (7) at a right angle to the base. Then, through the aiming line and reading lens, aim at objects beyond 100 meters. Adjust the lens until you can clearly see the scale on the dial. If it is an adjustable reading lens, adjust the lens until the scale on the clear disk can be seen.

How to determine the location of the direction of travel

jump the compass to the reading state, aim at an object, observe the object through the scale and aiming line on the reading system, and then read the reading of the moving direction on the dial, which corresponds to the azimuth angle of the object.

The known coordinates find target

, if the reading of the traveling direction is known, observe through the reading system and then rotate until the target appears on the turntable.

Map orientation

to complete complex operations on the map, the north side of the map must be determined according to the magnetism of the Earth. First, aim the centimeter at the nearest meridian, so that the upper half points to the north of the map.

Meridian is a parallel line from top descending on the map. Hold the compass and rotate the map until the North-seeking line coincides with the scale on the glass. The positioning of the map is complete.

Determine the direction of travel on the map

1) align the map to the north and draw a line from the departure point to the destination.

2) open the compass, and then place the centimeter line on the above line, so that the scale on the compass glass shows the orientation of the object. If the compass of this model does not have a centimeter line scale, it is OK to align the aiming line with the scale. Make sure that the phosphorescent arrow on the glass coincides with the North-seeking line on the turntable.

3) read the reading of the moving direction, which corresponds to the scale line on the glass.

4) move the compass away from the map and observe the rotation through the reading system until the reading of the moving direction appears. To find a secondary destination, you must track it on the same observation line. Repeat this operation until the destination is reached. The longer the route is, the more operations are performed.

Determine the location on the map

select two visible points on the ground and mark them on the map. After positioning the map, measure the degree of position (A) with compass, and then draw A line on the map according to the measured value. Use point A and perform the same operation to find point (B). The intersection of the two lines is the position of the observer on the map.

Use angle meter

angle meter can be used to measure the difference between height and slope. It can swing or operate automatically. Open the compass and release the pendulum. Aim at the upper part (or lower part) of the target through the degree lens (lower part) and scale (lower part). Pay attention to forming a line. The greater the angle of Compass tilt, the greater the position change of angle meter. Aim at the target and then tilt the compass to the angle meter side, and the pendulum stops swinging, so that the degree can be easily read. If the object is under the Observer, observe it through the upper half of the lid.

Calculation table

I II III IV V

angle angle angle angle inclination height

0-360 0-6400 0-400%-----------

   distance

I II III IV V

angle angle angle angle inclination height

0-360 0-6400 0-400%-----------

                                                                       distance

A height of the object

when calculating the inclination (degree or percentage), use the first column (I) of the calculation table and find the relevant values of the fourth column (IV) and The Fifth Column (V). After knowing the distance, you can calculate the height of the object. For example (Figure 7), for an object 4000 meters away, the inclination is 14 degrees:

A) 4000 m X 25%

------------------- = 1000 this formula applies to column 4

100%

B) 4000 m X1/4% This formula applies to the fifth column

D) measure the ground distance

   according to the principle of point C, the distance between two points visible on the ground can be measured. For example, you can measure the width of the farmhouse, the length of the bridge and so on. To measure the distance from your position to an object, you must have a necessary condition: the line between the two positions must be at right angles to the measured object.

To measure the angle

the right side of the measuring object. Swing the dial to move it to the correct position.

Remember the set degree and slowly move the compass to the left of the object. Subtracts the first degree value from the determined second value, and the obtained degree is the angle value of the left and right sides of the object.

From the North to measure the angle

if 360 degrees (North) appear in the reading system during the measurement process, 360 degrees = 0 degrees should be considered.

The calculation method is as follows: 360 degrees-second value + first value

if the first degree is 4, the second degree is 354, and the angle is 10.

For example, Figure 8

once the degree has been calculated and the distance is known, the width should be 1/20 of the distance according to column I and column II:

3 Degrees = 2000 meters 1/20=100 meters

or according to the calculation table:

3 Degrees = 5% of 2000 meters = 100 meters

measure the distance of an object with known height and width

when the height or width of an object is known, the distance of the object can be easily calculated by using the above formula.

In other words, if the width of an object with an angle of 8 is 1/7 of the distance, then conversely, the distance should be 7 times the width or height.

Measuring distance with glass scale

1. the line-of-sight
2. horizontal line with measurement scale
3. measurement line
4. the first object
5. the second object

in addition to the aiming line, some models of glass covers also have scales, when the distance between two objects at the same level of the observer is known, the distance between one object can also be measured. First, calculate the scale value between the two targets on the horizontal line. Each scale is 10 units. Divide the unit number by the distance value and multiply by 1000.

For example, if the distance between two objects is 36 meters and the scale value on the glass is 12, the result is:

12X10=120

120

-------- X1000 = 300 m (distance)

36 m