Chapter 289 Surveying and Mapping
Joss was lying on the grass, holding a piece of dogtail in his mouth and shaking it. There were several soldiers like him beside him, lazily basking in the sun.
The sun was a bit dazzling. Joss squinted his eyes and watched several figures in the distance busy coming and going.
"Hey! Tom, how did you come up with the above? It's just a picture. As for putting so much effort into it..."
"Joss!"
Before Joss could finish speaking, a loud roar came from the distance.
Hearing this sound, several people's bodies bounced off the ground like clockwork, and then stood upright.
"I caught you slacking off again, you bastards!"
Their squad leader - Staff Sergeant Makarov - roared in anger like a cannonball from behind. Call me.
Jos and others remained standing still, looking ahead without saying a word, but secretly complaining in their hearts: It was so unlucky that they were caught red-handed by the sergeant.
The sergeant turned to them and reprimanded loudly: "Don't you know clearly? This is neither Arda nor Bailding, but Emden, the former territory of the Kent family. There is no guarantee that several people will suddenly appear. What will happen if something goes wrong if a madman loyal to the tyrant comes?"
Makarov reprimanded them severely.
“In a place like this, vigilance is the top priority. If these precious students of the lord are really missing a few hairs, you will come to see me, and I will raise my head to see Lord Bryce. Do you understand?”
“Yes!” Joss and his comrades responded loudly.
"Each of you write a review and give it to me tonight!"
"Yes!" There was a cry in the reply.
The so-called "precious students" in Makarov's mouth are the figures busy in the distance. They are all from Weiss College.
A week ago, their platoon leader was transferred to the staff department. The new platoon leader also worked in the staff department before - the officer rotation system. This is one of the measures taken by Schroeder. Each staff department Officers should follow regulations and work in frontline troops regularly, so that they can gain more practical combat and work experience and avoid the embarrassment of just talking on paper.
A group of students also came with the new platoon leader. This group of students is amazing. According to the platoon leader, they are all the confidants of Count Greyman, Battalion Commander Bryce and Joey. Battalion Commander Si even had a meal with them in person.
The purpose of their coming here is to do some kind of "surveying and mapping". To put it simply, it means measuring and mapping - drawing accurate maps.
Makarov's company was assigned a task by Bryce: to assist this group of students in completing surveying and mapping work.
The students divided into several groups and acted separately, and Makarov and the others also ran around with them, helping to carry tools and acting as guards.
After being caught by Makarov, Jos and others no longer dared to slack off, and alerted the surroundings with full vigor, and it was dusk unknowingly.
It was getting late, and Makarov led Jos and others towards the students. The higher-ups ordered not to tire the lord's treasure, and it was time to lead them back to the barracks.
After approaching, they did not interrupt the students' work, but observed.
Two students stood on the slope, one high and one low, each holding one end of a long bamboo pole (actually a bamboo ruler), and one holding a wooden board (inclinometer), keeping the lower edge of the wooden board in contact with the measured bamboo. The rulers are parallel and consistent.
The wooden board is engraved with a series of equally spaced carvings. These carvings form a semicircle. The center of the circle is on the side of the board facing the sky. A straight line perpendicular to both sides of the board is carved starting from the center of the circle.
There is a small nail nailed in the center of the board, and a small iron ball suspended from it by a string. The iron ball pulls the thin string straight down to the ground. The thin string and the straight lines perpendicular to both sides of the board meet at the center of the circle, forming an angle.
Makarov asked in confusion: "What are you doing? Is this surveying?" A student was concentrating on writing something in his notebook and heard Makarov's voice. Only then did he notice someone approaching.
He turned his attention to Makarov and the others and smiled shyly.
"Sergeant, we are measuring the horizontal distance between two points."
Jos asked: "Horizontal distance?"
"Yes, you see This is a slope. What is measured directly with this bamboo ruler is the slope distance. We then use this inclinometer to get the slope angle - the angle between the bamboo ruler and the horizontal ground. The short lines that form a semicircle are the scales that mark the angle. The horizontal distance can be calculated from the slope distance and the slope angle.”
“It’s amazing. Is this enough?”
"Yes! This is mathematics." The student suddenly became excited, "The Lord is right, mathematics is the key to understanding everything in the world."
"Did the Lord teach you?"< br>
"Yes, the lord personally taught us trigonometric functions. Count Grayman knows so much!" At this point, several students looked in admiration.
However, Makarov and others did not know what trigonometric functions they knew. "Uh... why do we need to measure this so-called [horizontal distance]?"
"This is what the lord taught us. [Orthographic projection] method. For example..."
The students holding notebooks danced and explained the principles of maps to the 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 uses this method to combine some mountains, rivers and rivers on the ground. , houses, roads, rural trees, etc. are projected on a horizontal plane. This horizontal plane is replaced by a piece of paper, so this kind of map is also called a flat topographic map. "
Jos scratched his head: "I didn't see you flying. Let’s go to the sky to see the projection.”
The student laughed: “Of course we can’t fly to the sky to see it. We have to measure and draw it bit by bit with the help of those root points.”
He pointed around, and the soldiers understood what the so-called [Tugen Points] were. They were long poles erected on the ground with eye-catching flags tied to them.
"When drawing a floor plan, you must first draw the root points on the drawing, and then use these root points to map the blocks between each point in detail..."
After listening to the students for a long time, Ma Ma Karloff, Joss and others were still confused and couldn't understand many terms.
They had seen the map that the other party had drawn, and it was very unfamiliar. It was very different from the maps they had seen before from the officers. The maps they had seen before were like paintings. The mountains, rivers, and buildings above are very vivid and can be understood at a glance. However, the accuracy of those maps is quite confusing. After reading them, I can only have a rough understanding of the geographical information displayed above.
And the map drawn by the students, how should I say, the whole map gives people a feeling-serious, stiff... and terrible, the various images of the pictures are gone, replaced by unknown ones. Meaningful symbols, squares, straight lines and irregular curves (seemingly called contour lines), but according to the students, the accuracy of the maps they drew is 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 tools for surveying and mapping, such as right-angle levels, trough levels, squares, flat plates, tripods and other strange instruments.
After dinner, they received a new order from the battalion headquarters: the surveying and mapping work was suspended, and the 1st and 2nd Battalions began to attack Fort Byland tomorrow - it was just a feint attack. In short, they must exert enough pressure on the Kent family. pressure to attract the attention of enemy forces near Fort Bideau.
The coalition forces guarding Fort Bido can no longer hold out...
(End of this chapter)