"Senior, please have a look." Asher Luo took out a small box and opened it. Inside, there were neatly stacked things that Finley Xin had never seen before. The old man was a little curious and picked up an object with two legs connected together and asked, "What is this?" Asher Luo laughed and explained, "This is a dividing gauge. Please see, when you are setting up an array, you need several distances of the same length, and you can use this instrument to cut them." He demonstrated as he spoke: "There is a mechanism here. As long as you close this mechanism and lock the two legs, the lengths you cut will be exactly the same."
This thing made Finley Xin's eyes light up. Although it was just a small gadget, it was good because of its ingenious idea. When Finley Xin was arranging the formation, he had to use the quantity of "same length" in many places. With this divider, it was really a great help.
"And this..." Asher Luo picked up a modified compass. A scale was added to one of the legs of the compass, and it could be moved at will. The scale was also changed to the scales and inches commonly used in the fairy world. These were all made by Asher Luo at the instrument factory in the lower world at a high price.
"Whatever length you need, you can measure it directly on it. You can measure different lengths from the same starting point without having to do it in stages. You can get it right the first time. And this thing can also draw circles."
"And this, a vernier caliper..."
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