Lei Zhenzi interacted with his viewers while taking an electronic micrometer from the tool bench.
"Don't think that a live test can't be manipulated, it's actually quite simple to do!
For example, this micrometer we're using right now! The correct measurement rule is to calibrate it by zeroing before use. Without this step, the data obtained would be a big question mark! How exactly do we calibrate? It's very simple!"
Lei Zhenzi twisted the jaws of the micrometer all the way until they couldn't move anymore, and at that point, the electronic display showed 0.027.
Lei Zhenzi pressed a small red button next to it gently, and the number on the display zeroed out.
"There, it's calibrated now. Shall we test the actual diameter of this fishing line next?"
Lei Zhenzi casually unwound the fishing line, pulling out a length of about forty to fifty centimeters.
