"Type A measurement, angle 12 degrees and 48 points!"

"Type B measurement, angle 15 degrees and 15 minutes!"

"The two sets of measurement points are 60 feet apart."

After the two measurement teams reported the measurement results separately, the four students took out paper and pen at the same time, squatted on the ground and quickly calculated. Since learning the measurement technology with Su Hao, they have been accustomed to writing Arabic numerals with charcoal pens for mathematical operations. As for the trigonometric functions that need to be used in the operation, Su Hao has also specially made a trigonometric function table and sent it to the students for reference.

The charcoal pen used by the students is very different from the charcoal strips that Su Hao had found before. The refill core is thinner and there is a movable wooden pen holder on the outside, which looks a bit like the movable pencils of later generations. It requires working in the field for geographic surveys, and it is very inconvenient to use brushes and inkstones. This charcoal pen is the best recording tool.

The improvement of the measuring instrument is more obvious. Since the telescope was built, Su Hao has been thinking about using the telescope for the theodolite. With the cooperation of Hao Yizong, Hao Qing and his son, Su Hao successfully transformed the original theodolite, installed a special telescope, and designed a set of devices to adjust the angle of the telescope, so that the reading of the measurement angle can be accurate to the fraction.

With such an instrument, the measurement work is like a tiger. During this period, Su Hao quickly trained several students including Ma Yu, Jiang Yida, and let them master the skills of measuring distance, elevation and other indicators. Now, Su Hao wants them to show them in front of the recruiters to strengthen the confidence of the recruiters.

"Report to Su Baihu. The calculation result is that the two target rods are 8 zhang and 3 feet apart." Ma Yu first reported his calculation result, and then the other life members also reported the results one after another, which is exactly the same as Ma Yu's calculation.

Su Hao laughed and said to the young people who were recruiting, "Everyone has seen it. Just now, the students have calculated the distance between the two bamboo poles held by the Xiong brothers. Which brother is willing to go over and test it in practice?"

Everyone looked at each other. Although everyone was very eager to know whether the students measured the results were correct, they were going to check whether the chief said what the chief said. If the examination result was correct, it would be fine; if the examination result proved that the chief said the chief was wrong, this would be a slap in the face. Who dared to do such a thing?

"Haha, everyone doesn't have to be reserved. Just try it out. If the results measured are different from those calculated by our students, it means that they are not good at learning skills, and I will punish them." Su Hao said with a smile.

After hearing what Su Hao said, a young man named He Bencheng raised his hand to sign up, and then several others also signed up. Su Hao asked Ma Yu to take out a few soft rulers and hand them over to them. He Bencheng led the people and ran to the Xiong brothers.

"Hey, brothers. What were you doing just now?" Xiong Minfan asked He Bencheng who was running over. The place where he was standing was about a hundred steps away from the crowd and could not hear the movement there.

He Bencheng said: "Just Su Baihu asked four students to look at a cylinder tube. I saw that there were glass pieces on the cylinder tube. After they finished reading it, they said that the difference between the two bamboo poles of the two brothers was 8 zhang and 3 feet apart."

"8 zhang 3 feet?" Xiong Min, who was standing on the other side, heard it. He squinted his eyes and looked at the distance between himself and his brother, and said, "This Su Baihu still has two tricks. I also think it's seven or eight feet apart. However, if you can tell that it's exactly 8 zhang 3 feet, I'm thinking it's Hu Chu? By the way, brothers, you can't be sent by Su Baihu to get mad at the sloppy eyes, right?"

He Bencheng said: "I was wondering if you two brothers got the secret teachings of Su Baihu. They just stood up 8 zhang and 3 feet away so that Su Baihu could coax us. However, I saw it just now. When you two brothers walked to both sides, they didn't count their steps. I guess they were really casual. You two. Don't move after standing up, let me measure if it was exactly 8 zhang and 3 feet."

Several people who came to measure the distance each had a soft ruler on their hands. They muttered and began to measure. The Xiong brothers stood there and did not dare to move, but their eyes were staring at the ruler on everyone's hand, waiting for them to solve the mystery.

"It's evil, it's exactly 8 zhang and 3 feet!"

"There are so many here, 8 zhang, 3 feet 2 inches."

"Forget it for these 2 inches. This bamboo pole is more than 1 inch thick. Which one do you think we are counting as the bamboo pole?"

After measuring the distance, the few people were all stunned. The distance between the two bamboo poles was exactly the same as the students calculated. The difference was that the fraction below the ruler was the fraction. Everyone knew that this was not important and could not be investigated in detail. Several people, together with the Xiong brothers, couldn't help but turn their heads to see the direction of the crowd. I guess if I had to judge the distance between the two bamboo poles at such a long distance, how accurate could it be.

"He Bencheng, have you finished measuring?"

Someone shouted at the crowd. He Bencheng then thought of his duties and hurriedly left the Xiong brothers and ran towards the crowd. While running, he replied loudly: "It's done, it's done, it's done, 8 zhang and 3 feet, it's not bad at all."

When people shouted out, their eyes looked at Su Hao and those students completely differently. When they heard the students report the distance, everyone was somewhat skeptical. Now when they heard the people who went to measure the distance, they were shocked from the bottom of their hearts. This was a kind of awe of knowledge.

"Why, Master Baihu used this object to measure the distance?" Xiong Minfan, carrying the red and white benchmark, walked to the theodolite that the students had just used, looked at the telescope on it, and asked curiously.

Su Hao walked forward with a smile and said to him: "Xiong Minfan, thank you for your hard work, do you want to see this telescope?"

Xiong Minfan was a silly and bold. When he heard Su Hao speak to him politely, he nodded and said, "I want to see, how do you think?"

Su Hao waved his hand and signaled him to put his eyes on the eyepiece. Xiong Minfan did the same. He only glanced into the telescope and then raised his head in fear. His movements were too large and he almost knocked the tripod over.

"What's wrong, second brother?" Xiong Minyang asked from the side.

"Three, look at this, it's so strange. There are monsters inside." Xiong Minfan pointed to the telescope and said.

Xiong Min looked up at Su Hao, and saw that Su Hao had no intention of objection, he turned his eyes to the eyepiece and looked into the distance. After all, he was calmer than his brother, but the other world in the telescope did surprise him.

"Su Baihu, what is this? How can we bring things from afar to the eyes of villains?" Xiong Min asked to Su Hao. He had some disdain for Su Hao before, but now this disdain has disappeared. He is a smart person himself and has more admiration for what smart people do.

Su Hao said: "This thing is called a telescope. Its function is to help us see things in the distance. If we want to survey and map, we need to be able to accurately identify objects in the distance. This pair of telescopes is specially made for surveying and mapping, so the lenses are also engraved with scales."

"Su Baihu, can we have the opportunity to use such things in the future?" Xiong Minyang asked. In just one moment, he had already fallen in love with this thing.

Su Hao smiled and said, "There are opportunities, I'm afraid that one day you will be upset about this matter."

"I'm afraid this telescope will cost several taels of silver to buy it, right? Can it really be used for us in the future?" He Bencheng also came forward and asked while trying to look at the telescope.

"What are you saying?" Hao Tong came over at some point. He glared at He Bencheng and said, "This single-tube telescope is worth 50 taels of silver. You should be careful when you use it in the future. If you break it, you can't afford to lose your skin."

"My God, 50 taels!" Everyone was so scared that they took a few steps back, afraid that they would accidentally encounter this expensive thing.

Su Hao had no choice but to step forward to smooth things over: "Don't worry, no matter how expensive the tools are, they will be used for people. You just need to be careful when using them. If you accidentally damage the tools, you will not be compensated. Let's do this, everyone is standing up. Let's let Mr. Hao preach the military rules to everyone."

The students left with tripods and measuring instruments, and the recruits stood up again and faced the earthen platform. Hao Tong walked up to the earthen platform with a big stride, glanced at the audience with a knife-like gaze for a week, and then began to read out the military law:

"Order: In each team, two officials will be appointed to command justice.... During the march, those who dare to steal and abduct people's wealth. Those who have reached more than ten stakes will be beheaded and displayed to the public. The leader condons the soldiers, and those who have been arrested and robbed ten people will be dismissed and exiled. Those who have reached the entire team will be executed by beheading the camp. Those who have recruited newcomers who do not know the military law, dare to make words confusing people's hearts, obstruct orders, and cause bad things will be executed by storm and lose their homes. Those who are on the run and do not listen to the general's orders will be killed..."

As the word "kill" popped out of Hao Tong's mouth one after another, the noise of the recruits below gradually decreased, and finally reached a silence. Only Hao Tong's expressionless reading could be heard in the entire barracks.

Su Hao stood behind Hao Tong with his hands behind his back. Listening to these military rules, and looking at the silent new recruits below, he couldn't help but sigh:

Discipline is strict enough, and some places can even be called harsh. But in reality, how many troops can still be implemented? The Ming army's discipline collapsed, which is famous. Su Hao even heard of this 400 years later. Building an army with strict discipline and good combat is something that countless aspiring famous generals are striving to do, but how many people are there really doing it?

By chance, I became a member of the Ming army. So what should I do in the future? Should I actively participate in the construction of the army, or should I retreat after training these scouts?

Since you are here, just work hard, Su Hao said to himself.
Chapter completed!