A construction laser level includes a housing and a gimbal assembly disposed in the housing. The gimbal assembly includes a first laser generator operable to generate a first output beam. The first output beam projects outside of the housing onto a target surface. The gimbal assembly includes a second laser generator operable to generate a second output beam. The second output beam projects outside of the housing onto the target surface. The first output beam projects as a first line on the target surface. The second output beam projects as a second line on the target surface. The first line is generally perpendicular to the second line. A wavelength of the first output beam is in the range of 540 to 575 nanometers.

A laser level includes a level body, the level body including a body housing and a laser light source contained in the body housing, the laser light source configured to emit a laser light beam plane so as to project a laser light line on a target surface, the laser light beam plane configured to form an adjustable angle relative to a horizontal plane, and the laser level including a fixing structure configured to fix the laser light source such that the laser light beam plane projected therefrom is fixed at an adjusted angle, the laser light line providing a levelling height when in a horizontal state. The laser level further includes an adjustment means configured to adjust the attitude of the laser light source when the laser light line projected onto the target surface from the laser light source from a non-horizontal state to a horizontal state.

A laser level including a laser level body for projecting a laser beam, the laser level body including an adjustable stand having a left frame and a right frame independently manually displaceable between a fully closed frame position for storage purposes and a fully opened frame position for raising the laser level body to a maximum height above a horizontal reference surface. The adjustable stand enables the laser level body to be selectively inclined with respect to the horizontal reference surface.

A method for operating a construction laser by means of a remote controller, which has an input field, for initiating an action of the construction laser, wherein the remote control unit contains a sensor for determining a change in a parameter of the remote control unit, and the change in the parameter influences the at least one action, wherein the parameter is a parameter from the group comprising position, tilt, and movement of the remote control unit, and the action is an action or one operating mode from the group comprising rotational speed of the laser head, cross-sectional mode, mask mode, scan mode, tilt of the plane spanned by the particularly rotating laser beam, and point mode. To enable easy handling, following activation of the input field, the action is initiated only when the degree of change in the parameter of the remote control unit has reached a threshold value.

A laser level system including a laser level, the laser level projecting at least one laser line. The system also includes a bracket on which the laser level is mounted and a battery pack. The bracket includes a battery pack receptacle into which the battery pack is removably coupled. The battery pack powers the laser level. The battery pack has a maximum initial battery pack voltage (measured without a workload) of at least 18 volts. The system also includes at least one electrical conductor which delivers power from the battery pack in the battery pack receptacle to the laser level.

A surveying assistance device is a computer configured to read design information including center point data of a center point set on a centerline of a route and constituent point data of constituent points set on a section including the center point, the section being orthogonal to the centerline, acquire position information indicating a current position of a surveyed device with a predetermined period, creates a plan view from the design information and display the plan view on a terminal screen unit, display the current position on the plan view and updates the display every time the position information is acquired, record the acquired position information in a storage as an observation data, and display reference lines indicating positions which are distant from the designated section backward and forward in a route direction by a preset distance limit on the plan view.

The disclosure proceeds from a method for operating a control and monitoring device for a rotating laser, wherein in one method step, a laser power of a laser unit of the rotating laser is controlled as a function of a rotational speed of a rotating head of the rotating laser by means of a control or regulating unit of the control and monitoring device. By means of a further control or regulating unit of the control and monitoring device, the rotational speed of the rotating head and at least one operating parameter of the laser unit is interrogated and adjusted in order to emit a signal for influencing a laser beam that can be emitted by means of the laser unit.

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.

Method and apparatus for globally optimizing a weighted flow network, including the procedures of collecting a plurality of metrics in the weighted flow network, receiving a plurality of route requests from a first node to a second node in the weighted flow network, determining K best routes out of N possible routes from the first node to the second node according to the plurality of metrics, balancing a load in the weighted flow network by distributing the plurality of route requests over the K best routes from the first node to the second node, and updating the plurality of metrics.

In some embodiments, apparatuses and methods are provided herein useful to quickly and accurately determine shelf notch height for a shelving unit. This is particularly advantageous to determine whether shelves in the shelving unit were installed at the correct height and/or for installing shelves at desired heights. In some embodiments, a measurement member is provided with a bottom offset and shelf notch indicator portions. A horizontal position indicator can then be aligned with a desired shelf notch indicator portion and project outwardly therefrom towards a shelving unit to provide a visual indication of the height of a desired shelf notch.