Chapter 289 Mapping

Jos was lying on the grass, holding a dog tail in his mouth, shaking around, and there were a few soldiers around him, so he was in the sun lazily.

The sun was a little glamous, and Jos squinted his eyes, watching a few people in the distance busy.

"Hey! Tom, what do you think of what you think, just a picture, as for so hard ..."

"Jos!"

Before Jos finished, there was a roar from a distance.

Hearing this sound, a few people's bodies played from the ground like tightening their clockwork, and then stood up.

"Let me catch it again, you are a few bastards!"

Their squad leader, Makarov -the anger roar hit like an artillery shell behind him.

Jos and others kept standing up, and they didn't say a word ahead, but they were secretly crying: unlucky, and was caught by Shangshi.

The Chinese scholars turned to their eyes and reprimanded it loudly: "Isn't it clear about you in your hearts? It is neither Alida nor Bayerdin, but Emden. What should I do if the loyalty who is loyal to the throne will come? "

Marcalov reprimanded them.

"In this kind of place, the alert is the first priority. If these baby students of the lord have a few cold hair, you come to see me, and I will see Lord Bryce. Do you understand it?"

"Yes!" Jos and his comrades responded loudly.

"Each of you wrote a check to me at night!"

"Yes!" The answer was sorrowful.

The so -called "baby student" in Makarov is the figures of the people who are busy in the distance, and they are all from Vesh College.

A week ago, their ranking was transferred to the staff department, and the new leader also worked in the staff department -the rotation system of the officer. This is one of the measures taken by Schroder. Regularly go to work in the front line, so that he can gain more actual combat and work experience, so as not to appear to talk about the situation on paper.

With the new row, there are still a group of students who come over. This group of students can be rare. According to the ranking leader, they are the hearts of Earl Gryman. They ate meals.

The purpose of them is to do "surveying and mapping". To put it simply, it is measurement and drawing -drawing accurate maps.

Makarov's company was arranged by Bryce: assisted this group of students to complete the surveying and mapping work.

The students were divided into several groups, and Makarov also followed them to run the west to help carry tools and serve as guards.

After being caught by Macarov, Jos and others did not dare to slack off again, and they had twelve points of mental and alerting around, so they didn't know it to dusk.

It's not too early. Macarov took Jos and others to walk to the students. The order above could not be tired of the lord's baby, and it was time to lead them back to the camp.

After approaching, they did not interrupt the students' work, but observed.

The two students stood on the slope, one high, one low, each holding one end of a long bamboo pole (actually a bamboo ruler), and one of them held a wooden board (diagonal device), and kept the below of the wooden board and the measured bamboo measured. The ruler is parallel.

On the wooden board is a series of equal -pitching lines. These engraving forms a semi -circular. The heart is on the side of the wooden board towards the sky, and a straight line is engraved on both sides of the wooden board with the center of the circle.

There was a small nail in the round heart of the wooden board, and a small iron ball was hanging with a thin rope on it. The iron ball pulled the thin line to the ground straight, and the thin rope and the straight lines vertically on both sides of the wooden board met the center of the round, forming a corner.

Macarov asked doubtfully, "What are you doing? Is this surveying and mapping?"

A student concentrated on what he wrote in the laptop, and when he heard the voice of Makarov, he noticed that someone was approaching.

He turned his eyes at Macarov and others, and smiled embarrassedly.

"Chinese, we measure the horizontal distance between the two points."

Jos asked: "Horizontal distance?"

"Yes, you see this is a slope. The slope is directly measured by this bamboo ruler. We get the tilt angle through this slanting device -the angle between the bamboo ruler and the horizontal ground. The size of the angle size can be calculated through the slope and the tilt angle.

"Really amazing, is this so?"

"Yeah! This is mathematics." The student suddenly became excited. "The lord is right, mathematics is the key to understanding all things in the world."

"Did the lord teach you?"

"Yes, the triangle function is the lord's person taught us himself. Count Grandan knows so much!" Speaking of which, several students made a look of worship.

But Makarov and others don't know what triangle function, "Uh ... why should I test this so -called [horizontal distance]?"

There is no mistake, one, one, one, one, one, one, one, one 619, one book, one, one, one, one, one, one, a book!

"This is the [Positive Projection] method of the Lord's Professor. For example ..."

The students of the pen danced and explained the principles of the map to the big soldiers.

"You put something directly under a light source, and the shadow of this thing on the ground is its orthographic projection. The map we want to draw is to use this method to project some mountains, rivers, houses, roads, fields, trees, etc. on the ground onto a horizontal plane. This horizontal plane is replaced by a piece of paper, so this kind of map is also called a plane topographic map."

Jos scratched his head: "I didn't see you fly to the sky to see the projection."

The student laughed: "Of course we can't fly to the sky to see, we have to use those basic points to measure and draw little by little."

He pointed around, and the soldiers understood what the so-called [basic points] were. They were long poles erected on the ground with eye-catching flags tied on them.

"When drawing a plane map, you must first draw the basic points on the drawing, and then based on these basic points, the blocks between the points are detailed and mapped..."

After listening to the students for a long time, Makarov, Jos and others were still confused and didn't understand many terms.

They looked at the maps that the other party had drawn, and they were very unfamiliar with them. They were very different from the maps they had seen from the officers before. The maps they had seen before were like paintings, with mountains, rivers, and buildings on them very vividly, and they could be understood at a glance, but the accuracy of those maps was quite disappointing, and after reading them, they could only have a general understanding of the geographical information displayed on them.

As for the maps drawn by the students, how should I put it? The whole map gave people a feeling of seriousness, stiffness... and badness. The various images of the pictures disappeared, and were replaced by symbols, squares, straight lines, and irregular curves (seemingly called contour lines) with unknown meanings. However, according to the students, the accuracy of the maps they drew was far superior to the old maps in the past.

…

Before the sun set, the soldiers escorted the students back to the barracks, carrying a lot of surveying tools, such as right-angle levels, slot levels, right angles, flat plates, tripods, and other strange instruments.

After dinner, they received a new order from the battalion headquarters: suspend the surveying work, and the first and second battalions will start attacking Bailan Castle tomorrow - it's just a feint, anyway, they must put enough pressure on the Kent family to attract the attention of the enemy near Biddo Castle.

The coalition forces guarding Biddo Castle can't hold on any longer...