Determination of rectangular coordinates on the map and plotting objects on the map by coordinates. OBZhD

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Determination of rectangular coordinates on the map and plotting objects on the map by coordinates. Basics of safe life

Fundamentals of Safe Life Activities (OBZhD)

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Determining the rectangular coordinates of an object on a map with a compass

The distance from the given object to the lower kilometer line is measured with a compass along the perpendicular and its actual value is determined by the scale. Then this value in meters is attributed to the right to the signature of the kilometer line, and if the length of the segment is more than a kilometer, the kilometers are first summed up, and then the number of meters is also attributed to the right. This will be the coordinate of the object X (abscissa).

The coordinate is determined in the same way. Y (ordinate), only the distance from the object is measured to the left side of the square. In the absence of a compass, distances are measured with a ruler or strip of paper.

An example of determining object coordinates А shown in fig. 6.17:

X = 5; Y = 3.

Here is an example of determining the coordinates of object B, located at the frame of the map sheet in an incomplete square:

X = 5; Y = 3.

Determination of rectangular coordinates with a coordinate meter

Coordinator - a device for counting coordinates. The most common coordinate meter is in the form of a right angle of a transparent ruler, on the sides of which millimeter divisions are applied. This type of coordinator is available on the commander's line.

When determining the coordinates, the coordinate meter is applied to the square in which the object is located, aligning the vertical scale with its left side, and the horizontal one with the object.

Rice. 6.17. Determination of rectangular coordinates of objects on the map

Readings in millimeters (tenths of a millimeter are counted by eye) in accordance with the scale of the map are converted into real values \uXNUMXb\uXNUMXb- kilometers and meters, and then the value obtained on the vertical scale is summed (if it is more than a kilometer) with the digitization of the lower side of the square or attributed to it on the right (if the value is less than a kilometer). This will be the coordinate X object.

In the same order get the coordinate Y - the value corresponding to the reading on the horizontal scale, only the summation is carried out with the digitization of the left side of the square.

Author: Mikhailov L.A.

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