Abstract: A device for guiding electric tool operating direction, which is disposed on an electric tool, and includes: a power supply unit structured from two mutually configured coaxial coils, wherein one of the coils is a fixed coil, and a second coil is attached to a rotating end, alternating voltage is applied to the fixed coil, which induces alternating voltage output in the second coil through electromagnetic induction, thereby providing power to activate a guide to produce an indicator light. Even if an electric tool machine stops working during machining, the guiding indicator light can be still produced as a reference guide for machining.

Abstract: A laser beam module capable of simultaneously producing two mutually perpendicular optical indicator planes, and adapted for usage on building construction sites, thereat synchronously acquiring horizontal and perpendicular measurements as a basis for datum lines. The laser beam module primarily comprises a laser beam generator, a deflector is disposed in an optical path and utilized to split a laser beam thereof, whereby two light beams emerging from the deflector synchronously proceed towards two optical expanders, the two optical expanders being positioned such as to be mutually perpendicularly related, wherefrom the two light beams are synchronously transformed and therefrom expand to project a horizontal optical plane (beam) and a vertical optical plane (beam).

Abstract: A laser beam module capable of simultaneously producing two mutually perpendicular optical indicator planes, and adapted for usage on building construction sites, thereat synchronously acquiring horizontal and perpendicular measurements as a basis for datum lines. The laser beam module primarily comprises a laser beam generator, a deflector is disposed in an optical path and utilized to split a laser beam thereof, whereby two light beams emerging from the deflector synchronously proceed towards two optical expanders, the two optical expanders being positioned such as to be mutually perpendicularly related, wherefrom the two light beams are synchronously transformed and therefrom expand to project a horizontal optical plane (beam) and a vertical optical plane (beam).

Abstract: A laser meter includes a casing; a laser module inside the casing; and a reflection means coaxial with the laser module and having circular circumference. The laser meter can provide both horizontal and vertical light beam for mark and consumes lower power.

Abstract: A laser meter includes a casing; a laser module inside the casing; and a reflection means coaxial with the laser module and having circular circumference. The laser meter can provide both horizontal and vertical light beam for mark and consumes lower power.