Abstract: A laser level is provided that emits pulses of a laser beam at a mirror to generate multiple marked locations on a surface, such as a ceiling. The mirror rotates around an axis and includes multiple surfaces that face away from the axis. The laser pulses are bounced off the surfaces as the mirror rotates to produce the multiple marked locations.

Abstract: Various designs for a stand for a laser projection device including feet capable of being used in indoor and outdoor environments and the leg retention devices to lock legs of the stand together are shown. In one example, the stand includes feet with a rotatable spike structure that can be implanted in soft environments outdoors and hidden to protect indoor flooring. In another example the stand includes a leg retention device including a clip to clamp or hold the legs of the stand together in a closed position. In another example, a leg retention device including detents are used to hold the legs of the stand together in a closed position.

Abstract: Various designs for a stand for a laser projection device including feet capable of being used in indoor and outdoor environments and the leg retention devices to lock legs of the stand together are shown. In one example, the stand includes feet with a rotatable spike structure that can be implanted in soft environments outdoors and hidden to protect indoor flooring. In another example the stand includes a leg retention device including a clip to clamp or hold the legs of the stand together in a closed position. In another example, a leg retention device including detents are used to hold the legs of the stand together in a closed position.

Abstract: Various motorized device designs with backlash detection systems are shown. In a specific embodiment, a motorized laser level mount includes a rotatable laser platform, a housing cover, a housing, a gear train and a backlash detection system. The backlash detection system coupled to the motor and the laser platform and configured to determine when backlash has been removed from the gear train.

Abstract: An end cap for a grade rod and a method of using the same is provided. The end cap has a body that includes a bottom wall and a front wall perpendicular to the bottom wall. An outer surface of the bottom wall is substantially planar. A projection extends outwardly from the front wall. A bottom surface of the projection is substantially planar and substantially aligns with the outer surface of the bottom wall. In specific embodiments, the end cap is attached to an end of a grade rod. To reference the end of a recessed surface, such as a pipe, the end cap body is attached to a lower end of the grade rod. The grade rod is then positioned perpendicular to the ground at an open end of the recessed surface, such that the bottom surface of the projection rests on an interior portion of the recessed surface.

Abstract: Various designs for a stand for a laser projection device including feet capable of being used in indoor and outdoor environments and the leg retention devices to lock legs of the stand together are shown. In one example, the stand includes feet with a rotatable spike structure that can be implanted in soft environments outdoors and hidden to protect indoor flooring. In another example the stand includes a leg retention device including a clip to clamp or hold the legs of the stand together in a closed position. In another example, a leg retention device including detents are used to hold the legs of the stand together in a closed position.