You can't hide bad text with a 0.28 mm ultra-fine ballpoint pen, but there may be a way to write it densely on a 5-mm box.

An ultra-fine ballpoint pen that easily writes letters on Rodia's 5 mm square.

　Ultra-fine ballpoint pens seem to be very popular. I disguise my dirty handwriting with a very thick pen, but writing on very fine trout may make the crappy become inconspicuous. Stumbled upon the "edge of Jet Street" of Mitsubishi pencils in the shopping mall back home. It is said that the ball diameter of the pen tip is only 0.28 mm, and it is an oily ballpoint pen. Because I like the design of the pen itself, and there are limited colors of pink and energy yellow, so I bought it. When it comes to ultra-fine ballpoint pens, it is said that Mitsubishi pencils also have "Unibol Signobit 0.18mm" products. This is a very thin ball diameter, like the incredible presence of a needle tip of 0.18mm. Unfortunately, production has been completed and it is difficult to obtain. The less viscous water-based ink is used here. So even a pen tip like a needle can write words. On the other hand, the edge of the jet is sticky oily ink. Thinning is accompanied by more difficulties. Therefore, as an oily ballpoint pen, 0.28 mm is the smallest ball diameter in the world. Although it doesn't make any special sense, I like to use Rodia's 5mm checkered note. Generally speaking, when taking notes, you completely ignore the box and type and write, but when drawing, the box is helpful. In this 5 mm square thin grid can easily write text, this is the strength of ultra-fine ballpoint pen. I think of a man who writes letters carefully, like a small lattice like this. I was a friend from college. What suits him most is this ultra-fine ballpoint pen. To make it very clear, the writing doesn't taste good. It's too thin, it's like scratching the paper with a needle, there's a bit of a bait. However, the fineness of using a ballpoint pen is very interesting. When it comes to small words, written on grains of rice is fixed. "even a layman wants to do this," but unfortunately the surface of the rice is too smooth to write. In a sense, even ordinary people can write about three words on rice grains as long as they work hard. Of course, the ball of the ballpoint pen must be a real ball. If there is a skew, the ink will not come out continuously. This kind of cheap stationery also invests extremely high technical ability. Up to now, his precision is amazing. The price at the edge of the jet (excluding tax) is slightly higher, 1000 yen, the oily ballpoint pen of the same grade 0.3 mm, and the pilot's "Aquroball 150 (ultra-fine)" (150 yen) and automatic "needle point ultra-thin thread 0.3 mm" (500 yen) and other moderately priced products. Try it once and you can see the ultra-fine world of cutting-edge technology. (BCN Daoyue Ichiro)