If we fail to contact in precise grinding a surface and a thin board, we should damage a grinding wheel or a work material.That's why we grind carefully spending a lot of time. However, we aren't worry about it in using Luminous Checker. ​​

There is a problem not to detect a contact in grinding with a lot of grinding oils, but we can solve it by using Luminous Checker.

It becomes easy to train new staffs visually about a contact of a grinding wheel with a work material.

It has broad utility because it can be used in not only a grinding machine but also a machining centers.

We can do a precise grinding in noisy places because we don't need to care about noise in detecting.

It becomes easy to detect a contact for elderly people, deaf people, people have bad eyesight.

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In dressing, we can check a contact of a grinding wheel and a dresser precisely.