Rebirth of Wu Ba Spring and Autumn

Chapter 380 Wu Guo's Black Technology
The largest weapon production base in Wu State is the "Great Workshop" located at the eastern foot of Zijin Mountain.

This workshop specially manufactured siege equipment such as ladders, trebuchets, and siege hammers for the Wu army, as well as weapons such as swords, halberds, spears, shields, and daggers, as well as a series of war tools such as chariots and armor.

Of course, in addition to the big workshops, there are also some workshops in various parts of Wu State, which specialize in providing different weapons and equipment.

There are also some blacksmith shops among the people who can make weapons, but on the one hand, they are carried with them, and on the other hand, they are used for hunting. If they use weapons to do things that violate the law and discipline, the government will definitely punish them severely.

Even the blacksmith who made the weapon for the murderer must be punished!
At this time, Qingji, accompanied by the general of the Dagongling, and surrounded by a group of old guards, inspected the Zijin Mountain Great Workshop.

Strong national strength allowed Wu to manufacture the best weapons in the world at that time.

The weapons made by the Wu people are manufactured according to the standardization, and the error is so small that it is unimaginable!

"Glue slippery, get the widow's vernier caliper and tape measure."

"promise."

Following Qing Ji's instructions, the CRRC Mansion Commander who followed beside him brought out two very novel things.

One is a vernier caliper made of bronze, and the other is a tape measure drawn with extremely tough oilcloth...

Very crude!
However, it is extremely practical!
Wu's weapons are quite exquisitely made. There are three ridges more than 90 centimeters long on the bronze sword, which divide the slender sword body into eight sides. It is very difficult to complete such surface processing by hand.

The arc part of Ge is processed very regularly, and the three streamlined surfaces on the arrow are also completely symmetrical.

It is not easy to achieve such a standard!
Qingji took his own tape measure and vernier caliper, and measured a variety of weapons, including swords, daggers, spears, arrow clusters, etc., and found that these weapons all had certain standards.

"General."

"Chen is here!"

The go-getters quickly stood up.

"The vernier caliper and tape measure are both measuring tools. If anything is produced in the future, this can be used as a measure."

Degree is the name of the unit of length. It was created very early. In ancient times, it was named based on a certain part of the human body or a certain action.

For example, cun, zhi, chi, zhang, xun, chang, ren, etc. are all.

In these names, the ruler is the basic unit of length.

The length of a chi is similar to the length of a hand, so it is easy to identify, so in ancient times, it was said that the hand knows the ruler, and the ruler knows the ruler.

The measuring tools used by craftsmen to build weapons are also very primitive, basically using a standard, but there is a big gap.

"promise."

The general agreed, but he was very puzzled when he took the tape measure and vernier caliper from Qingji's hand.

What does the font size marked on this ruler mean?
As for Arabic numerals, it is naturally impossible for go-getters to recognize them.

But Qingji was already prepared.

"Gum slippery, teach Dagong Ling how to use this tape measure and vernier caliper."

"only."

After receiving Qing Ji's instructions, he immediately explained these two new measuring tools to Gan Jiang.

Not to mention the tape measure, the key point is the vernier caliper.

The vernier caliper is a measuring tool for measuring length, inner and outer diameters, and depth.

The vernier caliper is composed of two parts, the main ruler and the sliding vernier attached to the main ruler.

The main ruler is generally in millimeters, and the vernier has 10, 20 or 50 divisions. According to the division, the vernier calipers can be divided into ten-degree vernier calipers, twenty-degree vernier calipers, and fifty-degree vernier calipers.

游标为10分度的有9mm，20分度的有19mm，50分度的有49mm。

There are two pairs of movable jaws on the main scale and vernier of the vernier caliper, which are the inner measuring jaw and the outer measuring jaw.

The inner measuring jaw is usually used to measure the inner diameter, and the outer measuring jaw is usually used to measure the length and outer diameter.

For a while, the go-getters were in a fog, and it took a long time before he came back to his senses.

The point is to be familiar with Arabic numerals, so that you can remember how to use the vernier caliper!
And this kind of vernier caliper made of bronze is somewhat different from the vernier caliper used by modern people.

As we all know, the vernier calipers used by modern people use the principle of calculus.

When measuring, you need to align the scale of the main ruler with the composite ruler, and then understand the size of things according to the scale of the composite ruler, and the accuracy is still relatively accurate.

But bronze calipers are relatively poor!

When using it to measure an object, the length of the object can only be measured intuitively through the indicator line, so the accuracy will be greatly reduced, and it is much smaller than a vernier caliper.

However, this kind of bronze vernier caliper is already a very advanced and epoch-making black technology!

At least before Wang Mang invented this vernier caliper, Qingji's vernier caliper was more than [-] years ahead.

Later, Qingji plans to promote addition, subtraction, multiplication and division, as well as Arabic numerals one by one, leading the trend of the times!

"good……"

Holding a bronze sword about 90 centimeters long in his hand, Qingji nodded in satisfaction.

I saw that this bronze sword has a dense structure, the blade is bright and smooth, the blade is finely ground, and the textures come and go without interlacing.

Not only long, but also very sharp!
Looking back at the development of the Huaxia Bronze Sword, the blade has been continuously lengthened.

When it first started, the sword was only twenty or thirty centimeters long.

By the Spring and Autumn Period and the Warring States Period, the length generally reached about 50-60 cm.

In the late Warring States period, some swords exceeded 70 centimeters, and the longest was 75 or 76 centimeters.

In the Qin Dynasty, the length of Qin Jian in Guanzhong reached a new level, exceeding 80 centimeters, and the longest was nearly 95 centimeters!

Under Qing Ji's request, Gan Jiang and other swordsmiths racked their brains to figure out how to increase the length of the bronze sword without affecting its quality.

You know, an inch is long and an inch is strong!

In martial arts combat, the bronze sword's primary function is to assassinate the enemy and penetrate the opponent's armor, while chopping and pulling are only secondary functions.

Wu Jian, which is nearly 30 centimeters longer than the opponent's sword, is obviously easier to stab the opponent in fighting.

This is the main reason why Qingji must lengthen Wu Jian!

However, this is a bronze sword after all. What method did Gan Jiang and other swordsmiths use to make the long sword not easy to break?

"Your Majesty, this is a sword made by the countries of the Central Plains such as Song, Wei, and Lu. You may try it, Your Majesty."

Knowing that Qingji was coming to make an inspection tour, the general had already prepared, and immediately took a bronze sword about 60 centimeters long from the craftsman on one side.

Qing Ji nodded slightly, let the general hold the sword casually, and slashed at the sword in his hand.

"clang!"

After a crisp sound, the Wu sword in Qingji's hand was not damaged at all.

On the other hand, the bronze sword held by the general, as the attacking side, has a gap on the blade!
"color!"

Seeing this, all the people present clapped their hands and applauded.

(End of this chapter)