Chain saw for cutting timber, has laser device for cutting timber in equal constant length, and illuminating timer to be cut, where illuminating width is adjustable based on desired mass

摘要

The chain saw has a laser device for cutting timber in equal constant length. The laser device illuminates the timer to be cut, where illuminating width is adjustable based on a desired mass. The laser device illuminates left or right of the timber to be cut, where cutting length of the laser is adjusted to 50 centimeter such that laser beams meets an end of the timber at 50 centimeter.