A leveling base includes the leveling base including a pedestal, a leveling plate provided to the pedestal via leveling screws such that the leveling is enabled, and a prism unit including a prism having retroreflective characteristics. The prism unit is provided on the leveling plate, the prism unit retro-reflects a light beam entering from a vertically lower side by the prism, a lower through-hole through which a light beam which enters/is reflected to the prism penetrates is provided in the pedestal, and an attachment/detachment portion which enables the attachment/detachment of a predetermined measuring device is provided on an upper surface of the leveling plate.

Provided is an eyewear display system 1 including a scanner 2 configured to irradiate pulsed distance-measuring light and acquire point cloud data as observation data; an eyewear device 4 including a display 41 and configured to detect its own position and direction; a storage device 66 configured to store an observation route calculated in consideration of three-dimensional CAD design data of an observation site and instrument information of the scanner; and an information processing device 60 including a coordinate synchronizing unit 601 configured to synchronize the eyewear device 4 and a coordinate space of the observation route 661, and an eyewear display control unit 602 configured to control display of the observation route on the display 41. The eyewear device 4 superimposes and displays the observation route 661 on a landscape of the site.

A method for registering a total station, which is deployed in a measurement environment with one or more objects, in the reference system of a computer-aided design (CAD) model, which images the one or more objects of the measurement environment, includes registering the total station by a control device.

A survey machine capturing control part captures a captured image including a 2D mark on a survey object using a telescope. A survey machine recognizing control part detects a 2D mark image as a captured pattern, and recognizes a specific identification pattern by collating the detected captured pattern with an identification pattern of a 2D mark. A survey machine information displaying control part acquires and displays survey information on the captured image. A calculating control part calculates differences between a mark center position of 2D coordinates and a center position of 2D coordinates of a crosshair of the telescope. An adjusting control part adjusts a direction of the telescope so that the center position of the crosshair matches the mark center position. A ranging control part ranges the mark center position as measured values of coordinates. An information storing control part stores the measured values in the mark information table.

A device for determining an angle of rotation and/or a torque of a rotating part, having at least one angle detector for detecting an angular position of the rotating part relative to a reference position and at least one indexer for indexing at a 360° rotation of the rotating part relative to the reference position, the angle detector having a rotor connected in a non-rotatable manner to the rotating part with a base body for attachment to the rotating part and a plurality of vanes extending radially outwardly from the base body. At least one of the vanes of the rotor have a marker detectable by means of the indexer.

A method comprises detecting at a plurality of light-receiver units, an impingement position of the light plane on a photo sensor that has a known relative position in relation to the surface, determining, for each light-receiver unit and based on the impingement position and the known relative position, a crossing position value of the light plane with respect to the surface, performing a combined analysis of the crossing position values from the plurality of light-receiver units to derive alignment information comprising the deviation of the alignment of the surface of the structure relative to the light plane, and displaying the alignment information to a user. The invention also relates to computer programme product, a light-receiver unit and a system comprising a plurality of light-receiver units for performing the method.

A method and a system for projecting a construction plan or a specified pattern in a construction site. The system may include: a light projector configured to project an image associated with the construction plan or the specified pattern, onto a specific surface within the construction site; at least one sensor configured to obtain dimensional parameters of at least one of: the specific surface, and the image as projected on the specific surface; and a computer processor configured to: derive, from the construction plan or the construction pattern, an intended projection portion which comprises visual content intended to be projected on the specific surface; calculate a model of said image, based on the dimensional parameters obtained from the at least one sensor; and generate a modified projection portion based on the model, and the intended projection portion, wherein the light projector is further configured to project said modified projection portion.

An augmented-reality system is combined with a surveying system to make measurement and/or layout at a construction site more efficient. A reflector can be mounted to a wearable device having an augmented-reality system. A total station can be used to track a reflector, and truth can be transferred to the wearable device while an obstruction is between the total station and the reflector. Further, a target can be used to orient a local map of a wearable device to an environment based on a distance between the target and the wearable device.

Various laser level designs and targets are shown. In one example, a laser level emits one or more lasers that can be self-leveled via an internal leveling mechanism. The one or more lasers can be rotated and adjusted in response to commands received from a user. One or more laser levels described project target lights at predetermined distances on a surface, such as a ceiling.

Provided is a surveying instrument including a distance measuring module configured to measure a distance to an object, an optical axis deflector configured to deflect the distance measuring light, a measuring direction image pickup module configured to acquire an observation image, an arithmetic control module, and an operation panel includes a display module, the arithmetic control module is configured to cause the optical axis deflector to perform a scan with a predetermined scan pattern and create an overlay image as a superimposition of the locus of the scan pattern on the observation image, and calculate a formula of a straight line or a curve line based on a measurement result of intersections or the closest points to the intersections between the straight line or the curve line drawn along a ridge line or a contour of the object and the locus of the scan pattern on the displayed overlay image.