The alignment mark for checking the looseness of the bolts on the tower is "disappearing line."

The mark for checking the looseness of the bolts on the tower is "disappearing line." It does not fade outdoors for about five years, allowing for visual inspection of the bolt looseness.

The mark for checking the looseness of bolts on the iron tower is called "Disappearing Line." It does not fade outdoors for about five years, allowing for visual inspection of bolt looseness. Our company, Okitsumo, has developed the "Disappearing Line," which excels in resistance to sunlight, rain, wind, and humidity (weather resistance), ensuring that the lines drawn do not fade outdoors and have minimal discoloration. ~ Have you ever faced the problem of letters written outdoors fading away? ~ With a typical marker, colors start to fade in less than six months, but with the "Disappearing Line," the written letters remain intact for five years, with almost no fading. It is expected to be useful in maintenance sites and various work environments! ■ Color lineup: Red / White / Black / Blue For purchases, you can buy online from the bottom of the page in the [Related Links] section below. (Purchases of one piece are also acceptable.) * For more details, please refer to the PDF materials or feel free to contact us.

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