A device for measuring a height includes an inclined portion including a display, a bottom portion connected to the inclined portion, a support vertically connected to the bottom portion, and a laser device disposed in a region where the inclined portion and the support meet each other, the inclined portion, the bottom portion, and the support are connected to each other based on a shape of a right triangle when viewed from a side, the bottom portion includes a support plate for covering the bottom portion, and a switch is included between the bottom portion and the support plate.

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 alignment guide. The laser alignment guide includes a housing having at least one sidewall and a base defining an interior volume therein. A cap is removably securable to an upper end of the housing. The cap further includes at least one light source that can emit a visible laser disposed thereon. A mounting bracket that can magnetically secure to a surface is disposed on a second end of the housing. In some embodiments, at least one light source is disposed on a sidewall of the housing.

An inclination sensor that can accurately detect an inclination angle with respect to a horizontal direction while suppressing drift in output values from an acceleration sensor and a data acquisition device including the inclination sensor are described. The inclination sensor includes a gimbal mechanism that is rotatably supported around a first shaft and a second shaft, a first motor that rotates the first shaft, a second motor that rotates the second shaft, a first encoder that detects a rotation angle of the first shaft, a second encoder that detects a rotation angle of the second shaft, an acceleration sensor that is disposed in the gimbal mechanism, and a control unit that arithmetically determines the inclination angle with respect to the horizontal direction.

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.

Embodiments provide for methods and portable positioning devices adapted to determine a geospatial position of a point of interest. In one embodiment, the portable positioning device comprises an antenna, a levelling detector, an imaging device, a display unit and a processing unit. The antenna may be adapted to receive satellite information signals. The levelling detector is arranged relative to the antenna for detecting whether the antenna is positioned horizontally. The imaging device has an optical axis and a sighting axis. In one embodiment, the sighting axis intersects an antenna axis. In another embodiment, the sighting axis is aligned with the antenna axis. The display unit may be provided for assisting in identifying the point of interest within a field of view of the imaging device and for assisting in identifying whether the antenna is horizontally levelled and whether a phase center and the point of interest are vertically aligned.

Systems and methods for determining elevation based on structural modeling and light detection and ranging (LIDAR) data are disclosure. LIDAR bare earth data corresponding to an area within a parcel boundary is obtained as preliminary elevation data. A basis of structure boundary is determined for a structure within the parcel boundary based on an absence of the LIDAR bare earth data within a region in the area. Three-dimensional models are generated based on photographic data, to represent portions of the structure that affect LIDAR signals. A structure boundary for the structure is determined based on the basis of structure boundary in combination with supplemental elevation data generated using the three-dimensional models. Adjacent grade values are determined based on a portion of the preliminary elevation data and supplemental elevation data corresponding to an area between the structure boundary and a buffer boundary.

A growth information management apparatus is provided, which can accurately ascertain a growth situation of plants or the like regardless of a positional change of an equipment where the apparatus is mounted. A growth information management apparatus 100 emits a measuring beam to a plant P and acquires growth information on the plant, based on received reflected light, with the growth information management apparatus being mounted on another equipment 1. The growth information is corrected based on change information on the irradiation direction of the measuring beam according to a positional change of the other equipment.

A measuring system comprising a fixed measurement unit (101), a data processing unit (130) and a mobile unit (120). The mobile unit comprises a planar base (111), a reflector (118), an elevation element (119) fixed to the base and the reflector, and attaching the reflector to a fixed position in respect of the base. The mobile unit comprises also mobility means (112) for moving the base along a surface (113) such that the spatial orientation of the base (114) substantially corresponds with the spatial orientation of the currently underlying part of the surface. In addition the mobile unit comprises tilt measuring means (123) for determining a deviation between the spatial orientation of the base and a plane perpendicular to the ambient gravitational force, and tilt elimination means for eliminating the effect of the determined deviation. Measurement results are thus more accurate.

The invention provides a surveying instrument, which comprises a control device having a reference clock signal generating unit for producing a reference clock signal. The control device produces a time signal to indicate a standard time from a signal acquired from the GNSS device, puts a time stamp on the time signal, associates the time signal with the reference clock signal, measures a horizontal angle at a moment when the telescope unit sights the sun and acquires an image signal, puts a time stamp on the image signal, calculates a standard time at a time of image acquisition, calculates an azimuth angle of the sun at the standard time based on a latitude and a longitude of a point where the surveying instrument is installed and a standard time at the time of image acquisition, and updates a horizontal angle by the azimuth angle.