Laser drill guide sight - GIF

[Inner]

"After a drill is aligned and pressed into the work surface, the circle produced by the single dynamic position pattern becomes smaller. The change in the circle's diameter is equal to the depth that the drill bit has penetrated into the work surface. For example, if the diameter of the circular position pattern is 4.0 inches at the start of a drilling operation, and the ending diameter is 3.5 inches, then the drill bit has penetrated 0.5 inches into the work surface.

The two measurement patterns assist in this process by providing stationary and evenly spaced concentric circles that can be used as reference points to track the size change of the position pattern circle. For example, if the position pattern is 0.5 inches larger than the nearest measurement pattern at the start of a drilling operation, than an overlap of the two patterns at the end of the drilling operation would indicate a drill bit depth of 0.5 inches. "

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