Abstract: Various laser level designs including the ability to physically/mechanically mask light emitted from the laser level are shown. In one example, the laser level includes physical barriers that can be moved between open and closed positions to selectively block or mask a desired portion of the projected laser plane.

Abstract: Various aspects of a laser level interfacing with a modular storage system are shown. The laser level couples to a storage unit and/or a stand that itself couples to the storage unit. The stand extends past the front of the storage unit and permits the laser level to emit line in the downward direction.

Abstract: Various laser level designs and remote controls are shown. In another example, the remote control for a laser level receives a plurality of interface protocols configured to control one or more laser levels, and subsequently selects one of the interface protocols when initiating control of a laser level. In another example, the relative positions a remote control with respect to a laser level are determined, and subsequently a visual representation is presented at the remote control based on the relative positions.

Abstract: In one aspect of the present disclosure, a laser marker includes a supporter, a movable portion, at least one laser optical source, a tilt sensor, a first actuator, and a controller. The movable portion is tiltably supported by the supporter. The tilt sensor is provided to the movable portion, detects a first tilt of the movable portion, and outputs a first detection value that indicates the first tilt. The first actuator changes a tilt of the movable portion with respect to the supporter. The controller controls the first actuator such that a center value of a first series of detection values and a reference value coincide with each other.

Abstract: A chamber for a distillation column that is to operate at a temperature below 0° C., comprises at least four walls, which in use are vertical, and a roof, the chamber being designed to contain at least one distillation column, at least one other element that is to operate at a cryogenic temperature, and insulation, at least one wall being convex.

Abstract: A pendulum-based laser leveling device comprises a micro controller unit connected to a shock sensor for sensing a shock experienced by the laser leveling device. The micro controller unit is configured to send out a warning message when the magnitude of the shock sensed by the shock sensor exceeds a shock threshold.

Abstract: A method for producing a pendulum arrangement of a pendulum laser device includes producing a universal joint of a pendulum of the pendulum arrangement by forming two orthogonal, at least partially micro-structured shafts via plastic injection moulding and positioning at least two bearing shells on the at least partially micro-structured regions of at least one shaft of the universal joint. The method further includes producing an optic carrier of the pendulum of the pendulum arrangement as a single piece with the bearing shells by overmoulding at least two bearing shells surrounding a shaft of the universal joint via plastic injection moulding. The optic carrier is connected to the universal joint such that it is configured to rotate about the one shaft.

Abstract: A tripod head for supporting a camera includes an electronic leveling and display system to produce a continuously visible display of the leveling of the tripod head and the camera mounted thereon. That is, the tripod head may be rotated (a full 360 degrees) so the display system is visible regardless of the position of the camera. The display system attached to, or made part of, the tripod head includes light indicating elements (e.g., LEDs or LCDs) which may be easily seen, day or night and under physical constraints limiting access to the camera, regardless of the orientation of the camera.

Abstract: A laser beam generating device which includes a housing. A laser light generator is disposed in the housing and is operable to generate two output beams which project outside of the housing. The laser light generator includes a light source and a leveling mechanism on which the laser light generator is disposed. A mounting member is disposed on the housing and is configured to mount the laser beam generating device on a screw thread. The mounting member is movable relative to the housing between a first position and a second position.

Abstract: The invention provides a posture detecting device, which comprises a tilt detecting unit as rotatably supported around two shafts perpendicular each other to an outer frame and for detecting a tilting from the horizontal, encoders provided on each of the shafts, motors provided so as to rotate each shaft, and a first arithmetic processing unit for driving/controlling the motor based on a detection result from the tilt detecting unit, wherein the first arithmetic processing unit drives the motors so that the tilt detecting unit detects the horizontal based on a signal from the tilt detecting unit when the outer frame is tilted and calculates a posture of the outer frame based on outputs of the encoders when the tilt detecting unit detects the horizontal.

Abstract: The invention provides an automatic leveling device comprising; one tilt sensor provided on a leveling base plate, a leveling mechanism unit capable of tilting the leveling base plate in at least two directions and a control device for controlling the leveling mechanism unit and for tilting the leveling base plate, wherein the control device is configured to tilt the leveling base plate so that the tilting of the leveling base plate follows a searching route as set in a process of a leveling from a condition where a tilt detecting signal from the tilt sensor is not obtained, carries out an auxiliary leveling to obtain signals from the tilt sensor in a process of changing the tilting, and carries out a main leveling by controlling the leveling mechanism unit based on the detection result from the tilt sensor where a tilt detecting signal is obtained from the auxiliary leveling.

Abstract: A surveying device includes: an angle-of-view value acquisition unit which acquires the angle of view of a telescope; and a manipulation amount correction unit which, on the basis of the angle of view acquired by the angle-of-view value acquisition unit, corrects the displacement amount of the telescope such that the displacement amount of the telescope with respect to the rotation amounts of a horizontal tangent screw and a vertical tangent screw when the angle of view of the telescope is a first angle of view is smaller than the displacement amount of the telescope with respect to the rotation amounts of the horizontal tangent screw and the vertical tangent screw when the angle of view of the telescope is a second angle of view wider than the first angle of view.

Abstract: A multifunction laser leveling tool (1) is provided. The multifunction laser leveling tool (1) comprises: a housing (2); a pendulum (28) supported by the housing (2) via a universal joint so that the pendulum (28) is pivotable with respect to the housing (2) around a first axis (24) and a second axis (26) perpendicular to the first axis (24); a locking means (4) which is able to fixedly lock the pendulum (28) to the housing (2) and to release the pendulum (28) therefrom, wherein when the pendulum (28) is released, the pendulum (28) is in a plumb orientation and the first and second axes (24,26) lie in a horizontal plane; a first laser beam emitter (36) attached to the pendulum (28) for emitting a first laser plane; an angle sensing means (44) attached to the pendulum (28) for measuring the orientation of the pendulum (28); a display module having two sections (6,8) attached to the housing (2) for displaying the measured orientation of the pendulum (28).

Abstract: A laser surveying system comprises a leveling unit (3) having a motor for leveling, a light source unit (14) for emitting a laser beam, a light projecting optical system installed on the leveling unit and for projecting the laser beam, a power supply unit for supplying electric power to each of component sites, a control unit (7) for driving and controlling each of the component sites, a storage unit (26), a tilt detecting means (11) installed on the leveling unit and used for detecting leveling conditions, a rotation number detecting means (13) for detecting number of rotations of the motor, a light source detecting means (16a and 16b) for detecting light emitting condition of the light source unit, a voltage detecting means (24) for detecting output voltage of the power source unit, and an abnormality detecting means for detecting operational abnormality, and in the laser surveying system, the control unit monitors whether there is abnormality or not by the abnormality detecting means, samples a detection s

Abstract: A self-leveling multi-line laser device is disclosed. The multi-line laser device includes at least two laser beams and at least two reflecting cones, wherein the cone axes of the reflecting cones are perpendicular to each other and each of the laser beams can be directed, preferably eccentrically, parallel to the axis of one of the reflecting cones against the tip of said reflecting cone. With the multi-line laser device, at least two projectable laser lines can be generated.

Abstract: The present disclosure relates to a laser level system. The laser level system includes a laser level, a quick connect tool mounting bracket, and/or other components. The laser level may be mounted to the quick connect tool mounting bracket in one or more different orientations via a quick connect adapter. The quick connect adapter may be removably coupled with the bracket and/or one or more quick connect mounts supported by one or more external surfaces a housing of the laser level. One or more laser beams generated by the laser level may be controlled via a controller to visually indicate whether the laser level is in a “manual” mode, whether the laser level is in a “self-leveling” mode, and/or whether the laser level is “out of level” while in the “self-leveling” mode. In some embodiments, the laser level system includes a self-leveling mechanism lock.

Abstract: Layout equipment for locating a plurality of positions at a construction site is provided. The layout equipment includes a laser target rod, a self-leveling laser transmitter, and a remote control device. The rod has an elongated rod body including retroreflective material extending substantially the entire length of the body. The laser transmitter projects a beam of laser light, and receives laser light reflected from the rod. The laser transmitter includes a first wireless communication unit, and a transmitter control. The transmitter control is responsive to the first wireless communication unit. The remote control device includes a second wireless communication unit that communicates wirelessly with to the laser transmitter to cause the laser transmitter to project the beam of laser light toward a position at the construction site, and signals the user of the layout equipment when the rod has been placed at the position.

Abstract: The present invention provides a tilt detecting device (1), comprising a first tilt sensor (2) for detecting a tilting with respect to direction of gravity with high accuracy, a second tilt sensor (3) for detecting the tilting with respect to direction of gravity and for detecting the tilting with lower accuracy than that of the first tilt sensor and in a range wider than that of the first tilt sensor, wherein the first tilt sensor and the second tilt sensor are fixed relatively to each other, and the tilting is detected by the second tilt sensor by using a reference position and a detecting direction as detected by the first tilt sensor as reference.

Abstract: A construction laser system includes a rotating laser with self-leveling and a laser receiver. The system performs a self-leveling recalibration process by which-the self-leveling is checked automatically for quality and the related calibration data is updated automatically. A sequence of N calibration measurements is defined, where N is greater than or equal to three. The calibration measurements are obtained by the rotating laser and the laser receiver with a respective azimuthal alignment of the stand while the position of the laser receiver remains unchanged. As part of each calibration measurement, one output signal dependent on the laser beam impingement position is detected. The respective output signals or specified impingement positions are evaluated in pairs correlated with the respective I-th azimuthal alignments. The quality of the beam leveling functionality is thereby checked. If the requirements are not met, the previously stored calibration data can then be updated automatically.

Abstract: A self-leveling multi-line laser device is disclosed. The multi-line laser device includes at least two laser beams and at least two reflecting cones, wherein the cone axes of the reflecting cones are perpendicular to each other and each of the laser beams can be directed, preferably eccentrically, parallel to the axis of one of the reflecting cones against the tip of said reflecting cone. With the multi-line laser device, at least two projectable laser lines can be generated.

Abstract: A method of operating a rotary laser level includes actuating a drive system to level a laser assembly of a base unit of the rotary laser level, and emitting a laser beam from the rotating laser assembly after the laser assembly has been leveled. A first beam center position of the emitted laser beam is detected using a portable receiving unit. An initial level position is determined at the first beam center position, and the receiving unit is fixed at the first beam center position. The base unit is then rotated so the laser assembly is pointing away from the receiving unit and the laser assembly is leveled again. The laser beam is then centered on the receiving unit again and a current level position is determined. The current level position is compared to the initial level position to determine a state of calibration of a level position of the laser assembly based on the comparison.

Abstract: Methods and devices for use in surveying operations are provided. A device is provided for selectively connecting to surveying equipment, such as a surveying pole, and is adapted for accurately adjusting a reference point in at least two axes. The device is adapted to work in conjunction with additional surveying equipment, such as theodolites and transits as well as one or more central processing units for analyzing, storing, and providing data.

Abstract: The invention relates to a laser receiver for detecting a relative position of a defined zero point of said laser receiver with respect to a reference laser beam. Therefore, the laser receiver comprises a laser light photo sensor having a plurality of photo sensitive elements providing an electrical output when illuminated by said reference laser beam, a circuitry connected to said photo sensor for determination of said relative position and a visible readout for indication of said relative position, in particular for indicating if said zero point is on-grade with respect to said reference laser beam. According to the invention, at least a first laser fan emitter, with a laser light source and at least one fan-generating optical element, is provided for projecting a visible laser line onto a target surface, particularly in order to re-project a sharp marking-line through the vertical center of the reference laser beam.

Abstract: Rotating construction laser device with a grade mechanism, including a code element and a position detection device for providing and detecting a feedback position information, and a leveling mechanism, which supports a lens barrel tiltably and is designed to tilt the lens barrel in order to have the level position detected by a tilt sensor and therewith to level the grade arm, the code element or the position detection device is arranged directly on the grade arm, and the feedback position information directly depends on the position of a reference point on the grade arm, the reference point being defined by the code element or the position detection device, respectively, thus allowing to deduce a position of the grade arm directly from the feedback position information, and/or to calculate a tilting angle of the grade arm with respect to the lens barrel directly from the feedback position information.

Abstract: A method for determining a top dead-center of a wheel. The method includes (i) removably connecting a self-aligning laser guide to a wheel balancer shaft; (ii) allowing gravity to position said self-aligning laser guide such that its longitudinal axis is substantially perpendicular to a floor surface; and (iii) powering said self-aligning laser guide to indicate said top dead-center of said wheel.

Abstract: A laser-leveling device having a at least one radiation module and mounting module, where laser radiation sources and the prisms for developing planes from the laser beams are combined in the radiation module. The radiation module with housing contains a device for horizontal fine adjustment, an additional power supply with control, and an additional self-leveling support plate for receiving the laser radiation sources and prisms for developing the planes from the laser beams The mounting module with housing contains a self-leveling support plate, power supply with control, and a mount for securing to a tripod. The housing of the at least one radiation module and the housing of the mounting module are embodied such that the radiation module can be coupled to the mounting module, and it is possible to connect at least one additional radiation module.

Abstract: Layout equipment for locating a plurality of positions at a construction site, and a method of using the layout equipment, contemplate a laser target rod having an elongated rod body and including retroreflective material on the rod body. The retroreflective material extends substantially the entire length of the rod body, and has scale markings visible thereon. A self-leveling laser transmitter at a known position projects a beam of laser light horizontally, and receives laser light reflected from the laser target rod. A remote control device signals the user of the layout equipment when the rod has been placed at a selected one of the plurality of positions. The layout equipment may also be used to determine relative locations in a previously built structure.

Abstract: A laser surveying system comprises a leveling unit (3) having a motor for leveling, a light source unit (14) for emitting a laser beam, a light projecting optical system installed on the leveling unit and for projecting the laser beam, a power supply unit for supplying electric power to each of component sites, a control unit (7) for driving and controlling each of the component sites, a storage unit (26), a tilt detecting means (11) installed on the leveling unit and used for detecting leveling conditions, a rotation number detecting means (13) for detecting number of rotations of the motor, a light source detecting means (16a and 16b) for detecting light emitting condition of the light source unit, a voltage detecting means (24) for detecting output voltage of the power source unit, and an abnormality detecting means for detecting operational abnormality, and in the laser surveying system, the control unit monitors whether there is abnormality or not by the abnormality detecting means, samples a detection s

Abstract: The invention relates to a rotating construction laser (1), in particular a self-compensating construction laser. The construction laser (1) comprises a base (2,115) and a laser unit (3,114) for emitting a laser beam (11,83) rotating around an axis (18) of rotation so that the rotating laser beam (11,83) defines a laser plane. Therein, the laser unit (3,114) is built and tiltably arranged to the base (2,115) in such a way, that the axis (18) is tiltable in at least one direction. Furthermore, a tilt sensor (19,96,109) is present for measuring the tilt of the axis (18). According to the invention, the tilt sensor (19,96,109) is supported by a sensor platform being pivotable with respect to the laser unit around the axis (18) between at least two defined pivoting-positions (54,55,70-22) in such a way, that the tilt of the axis (18) is measurable by the tilt sensor (19,96,109) in the at least two pivoting-positions (54,55, 70-22).

Abstract: A rotary laser beam emitter includes a base unit including a reference reflector with a reference reflective face parallel to a reference plane, a rotary element rotatably supported on the base unit around a rotary axis, and a beam emitting unit contained in the rotary element and including a light source and an optical emission system emitting the laser beam from the light source in a direction parallel to the reference plane on the optical axis. When the rotary element is inclined relative to the rotary axis and the emitted laser beam is inclined to the reference plane, the optical emission system emits the laser beam from the light source to the reference reflective face and emit the laser beam reflected by the reference reflective face in a direction inclined to the optical axis of the laser beam so as to neutralize the inclined laser beam.

Abstract: A surveying and measuring device and method of using the same is provided. The device, which is particularly suited for determining or measuring a rotational position of an object, comprises an elongate rigid member extending radially away from a known center of an object. Distal ends of the rigid member downwardly project points which may be compared to, for example, survey markers or known points.

Abstract: The invention relates to a marking and/or leveling device (1) comprising a light source (4) disposed on a pendulum (3) that can pivot relative to a housing (2). According to the invention, means are provided for accelerating (9) the pendulum (3) and/or a pendulum bearing (8) in a pulsing manner.

Abstract: A laser device, including a cradle with a laser unit exiting from this, the cradle being connected to a base element, relative to which the cradle can be adjusted in terms of inclination by at least one actuating drive. In order to achieve a secure mounting of the cradle for the laser unit with simple structural means, while at the same time eliminating any play between the mutually tilting parts, it is proposed that the cradle be connected to the base element, first, by a solid joint, and secondly by two adjusting drives, wherein the adjusting drives are arranged with respect to the solid joint so that the lines of connection between lengthwise axis of the solid joint and the adjusting drives subtend a right angle.

Abstract: The invention relates to a self-leveling multi-line laser device. Said multi-line laser device comprises at least two laser beams and at least two reflecting cones, wherein the cone axes of the reflecting cones are perpendicular to each other and each of the laser beams can be directed, preferably eccentrically, parallel to the axis of one of reflecting cones against the tip of said reflecting cone. By means of the multi-line laser device, at least two projectable laser lines can be generated.

Abstract: A two-dimension layout system identifies points and their coordinates, and transfers identified points on a solid surface to other surfaces in a vertical direction. Two leveling laser light transmitters are used with a remote unit to control certain functions. The laser transmitters rotate about the azimuth, and emit vertical (plumb) laser planes. After being set up using benchmark points, the projected lines of the laser planes will intersect on the floor of a jobsite at any point of interest in a virtual floor plan, under control of a user with the remote unit. The laser light planes also project lines that will intersect along the ceiling at a point that is truly plumb above the crossing point on the floor. The laser planes also provide an “implied” plumb line that is projected in space, which is visible along a solid vertical surface to between the intersecting floor and ceiling points.

Abstract: A two-dimension layout system identifies points and their coordinates, and transfers identified points on a solid surface to other surfaces in a vertical direction. Two leveling laser light transmitters are used with a remote unit to control certain functions. The laser transmitters rotate about the azimuth, and emit vertical (plumb) laser planes. After being set up using benchmark points, the projected lines of the laser planes will intersect on the floor of a jobsite at any point of interest in a virtual floor plan, under control of a user with the remote unit. The laser light planes also project lines that will intersect along the ceiling at a point that is truly plumb above the crossing point on the floor. The laser planes also provide an “implied” plumb line that is projected in space, which is visible along a solid vertical surface between the intersecting floor and ceiling points.

Abstract: This invention relates to a self-activated automatic candle snuffer. The device generally comprises a back plate connected to a base and to a spoon having a hole so that the back plate supports the spoon for spring movement with respect to the base. A candle mounted to the base so that the candle passes through the hole in the spoon. A set pin movably affixed to the spoon proximate the hole, operatively arranged to pierce and enter the candle so as to maintain tension in the spoon. A ball balanced on the spoon and a means for release of tension in the spoon which causes release of potential energy that allows the spoon to elevate to an inclined plane to cause the ball to roll down the spoon to settle on the hole and the wick and extinguish a flame.

Abstract: A surveying instrument includes a measuring system having a component, a support, and a mounting unit that is arranged at the support. The component is mounted on the mounting unit and the support and the mounting unit are configured such that the mounting unit is adjustable relative to the support. The instrument also includes a fine inclination sensor that is arranged at the component and is configured to measure an inclination angle of the component and to output fine inclination data. The instrument further includes a coarse inclination sensor that is arranged at the component, is configured to measure the inclination angle and to output coarse inclination data, and includes an electronic acceleration sensor. The instrument additionally includes an evaluation unit that is configured to select inclination data from the coarse inclination data and the fine inclination data and an output unit that is configured to output the inclination data.

Abstract: A frictional pivot 100 for use in a device measuring gravitational alignment is provided. The frictional pivot 100 comprises a gravity-responsive directional means 200 for indicating a datum direction of alignment with gravity; frictional pivoting means 300, 400 for allowing the gravity-responsive means coarsely to align with gravity; vibration means 303, 403 for vibrating one or more elements of the pivoting means; and portable power means 303a for powering the vibration means 303, 403.

Abstract: An optomechanical leveling device (1) has an external housing (2) with a bottom surface (4), a carrier frame (6) located inside the external housing (2) and fastened in an elastically damped manner by means of damping elements (5) elastically preloaded along respective tensioning axes (S) and an optics carrier (7) suspended at the carrier frame (6) such that it can be oriented by the gravitational field (G).

Abstract: The application relates to indicating a grade for example in constructions applications using a laser beam. A laser beam is emitted from a laser unit to a desired direction having a grade angle with regard to a level angle. The level sensor is provided for adjusting the level angle and a grade sensor is provided for indicating a grade angle on the basis of the level angle from the level sensor.

Abstract: A rotary laser beam emitter includes a base unit including a reference reflector with a reference reflective face parallel to a reference plane, a rotary element rotatably supported on the base unit around a rotary axis, and a beam emitting unit contained in the rotary element and including a light source and an optical emission system emitting the laser beam from the light source in a direction parallel to the reference plane on the optical axis. When the rotary element is inclined relative to the rotary axis and the emitted laser beam is inclined to the reference plane, the optical emission system emits the laser beam from the light source to the reference reflective face and emit the laser beam reflected by the reference reflective face in a direction inclined to the optical axis of the laser beam so as to neutralize the inclined laser beam.

Abstract: An automatic apparatus for leveling suspended articles or hung objects to an angle relative to a reference. The shift lever assembly (112), used as a gravity reference, is activated when the pendulum member swings horizontally in response to slightest inclination or tilt, thereby causing the conductor pin (114.14) to contact one side of a pair of conductor plates (114.24b) or (114.24b). The contacting of the conductor pin to one side of the pair of conductor plates (114.24b) or (114.24b) completes the electrical circuit and allows the electrical storage device (118) to provide electrical current to the planetary motor (116), causing it to rotate. The turning of the planetary motor (116) causes the shift lever assembly (112) to automatically shift the elongated lever arm (112.10) against the rigid axle (122.22), thereby shifting the center of balance of the object in the opposite direction of the rotation of the wheel-like driven gear (112.20). Leveling occurs when the elongated lever arm (112.

Abstract: This invention relates to a pendulum assembly within a laser levelling apparatus. In use, the assembly is rotatably mounted with the levelling device to hang under the effect of gravity such that opposed light emitting devices produce light on a horizontal plane. The assembly includes a main body rotatably mountable in the levelling apparatus and at least two light emitting devices mounted in or on light emitting mounting portions. At least one of the light emitting mounting positions is rotatably mounted to the main body and adjustable in its orientation with respect to the main body by an threaded adjustment means. Once one light emitting device is mounted, the adjustable one can be brought into a substantially co-linear position by movement of the threaded adjustment means. A further embodiment includes a further light emitter acting on a reflective surface to provide a substantially vertical light.

Abstract: A damping system and method for a pendulously supported crossline generator is disclosed. The crossline generator comprises a support body pendulously supported and having ear portions and a paddle. A rotation damping device having cages each with a magnet set is provided, wherein the ear portions extend into respective ones of the cages. A pitch damping device having a damping housing and a ring magnet supported in the damping housing is also provided. The paddle has a plate portion situated below the ring magnet.

Abstract: A level, particularly a laser level is provided with a chassis simultaneously pivotable in at least a first direction and a second direction under the influence of gravity and a housing surrounding at least a portion of the chassis. The chassis carries a first light source for emitting a first light beam from the housing along a first plane and a second light for emitting a second light beam from the housing along a second plane.

Abstract: A light line generating device is configured to generate horizontal and vertical light lines on a work surface. The device includes a pendulum assembly, a pendulum lock mechanism, level indicator device, a light line generating assembly. The pendulum assembly includes a gimbal mechanism that supports a pendulum such that the pendulum levels within two planes. The lock mechanism is configured to selectively capture the pendulum. The level indicator device and the light line generating assembly are coupled to the pendulum. The device further includes a pendulum reorientation mechanism configured to reposition the gimbal. In operation, the device may be utilized to generate either a self-leveling horizontal light line or a manually-leveled vertical light line.

Abstract: An optomechanical leveling device (1) has an external housing (2) with a bottom surface (4), a carrier frame (6) located inside the external housing (2) and fastened in an elastically damped manner by means of damping elements (5) elastically preloaded along respective tensioning axes (S) and an optics carrier (7) suspended at the carrier frame (6) such that it can be oriented by the gravitational field (G).

Abstract: To obtain a laser marker capable of effectively reducing an impact force applied to essential components of the laser marker including a gimbal mechanism, a light source unit holder, and a light source unit when the laser marker falls, and in particular, capable of reducing damage to the gimbal mechanism, a main body case including a gimbal mechanism, a light source unit holder suspended swingably by the gimbal mechanism, light source units attached to the light source unit holder and outputting a projection line beam, a base supporting the main body case, and a plurality of legs provided at the bottom of the base and supporting the base are provided, and the base and each leg are coupled via an elastic body that bends when an impact in the vertical direction is applied.

Abstract: A tool incorporating a device that generates a light line on a work surface such as a wall is disclosed. The device includes a housing containing a self-leveling pendulum assembly and a light source that directs a light beam along a pathway. A redirection assembly, also contained in the housing, is capable of altering the pathway of the light beam prior to exiting the housing. In use, the device selectively generates a light line on the work surface in a desired direction.