Abstract: In order to save on costs and space when processing analogue signals and pulse signals, a signal measurement unit (2) comprises: an input unit (21) which inputs an electrical signal from a device and selects whether to transmit the signal to an analogue measurement unit (22) or a counting measurement unit (23); the analogue measurement unit which measures voltage as an analogue value; and the counting measurement unit which counts the number of times that the voltage value has equaled or exceeded a first threshold value or the number of times that the voltage value has equaled or fallen below a second threshold value.

Abstract: A method, performed by a movable device, of sensing an inclination of a distance sensor attached to the movable device includes sensing an obstacle fixed in a task space of the movable device; the movable device moving toward the sensed obstacle; while the movable device is moving, measuring a plurality of first distance values from the movable device to the obstacle by using the distance sensor; obtaining at least one second distance value indicating a moving distance of the movable device while measuring the plurality of first distance values, using odometry information of the movable device; and identifying an inclination state of the distance sensor based on the plurality of measured first distance values and the obtained at least one second distance value.

Abstract: Disclosed is a hole wall thickness gauge. In the technical solution, a deburring function and a measurement function are integrated, and measurement is completed while deburring is completed. The hole wall thickness gauge is ingenious in design, flexible and high in efficiency and has a quite high practical application value.

Abstract: A computer for a motor vehicle. The vehicle including a plurality of wheels, at least one of the wheels including a sensor for measuring at least one value of a “pitch” parameter, enabling the computer to determine a “pitch” coordinate of the sensor along a predetermined “pitch” axis orthogonal to the direction of movement of the vehicle and parallel to the plane of the road. The computer being capable of receiving from the sensor at least one value of the pitch parameter, determining at least one pitch coordinate of the sensor on the basis of the at least one value received, detecting a geometric anomaly in the wheel including the sensor when at least one determined pitch coordinate is outside a first predetermined range of values of coordinates on the pitch axis.

Abstract: A geodetic levelling staff, a method for measuring a height with the geodetic levelling staff and a system including the geodetic levelling staff and a level are provided. The geodetic levelling staff includes a circular level that indicates whether the geodetic levelling staff is in a vertical position, a level detection unit for detecting a bubble position of the circular level, a control circuit that receives detected data performed by the level detection unit and transmits the detected data to a near field communication tool, the near field communication tool for performing a communication from the geodetic levelling staff to the level according to the detected data received from the control circuit, wherein the level operates according to the detected data received from the near field communication tool.

Abstract: A tubular member includes a pin end terminating in a pin end face, an external thread profile defined on an outer circumference of the pin end and terminating at a thread termination location axially offset from the pin end face, and an axial extension provided on the pin end and extending axially from the thread termination location to the pin end face, the axial extension defining a gauge surface for obtaining diameter measurements of the pin end. An angle of the gauge surface aligns with an angle of a root plane provided by the external thread profile.

Abstract: A positioning system for positioning an object includes a stacked stage system movable on a reference surface. The stacked stage system includes a driving system for driving the stacked stage system; a first stage driven along a driving plane parallel to the plane of the reference surface; and a main stage for supporting the object, the main stage arranged on the driven first stage for moving the main stage along the driving plane. The main stage includes a rotary drive system for rotating the main stage with respect to the first stage around an axis parallel to an out-of-plane direction perpendicular to the driving plane. The main stage is movable with respect to the first stage in the out-of-plane direction and further includes a support bearing to movably support the main stage on the reference surface in said out-of-plane direction.

Abstract: A level instrument for surveying a mining subsidence zone in a coal mining area includes a bottom plate, a leveling mechanism, a lifting mechanism, and a level instrument body, where the leveling mechanism is provided on the bottom plate, the lifting mechanism is provided on the leveling mechanism, and the level instrument body is provided on the lifting mechanism. A surveying method using the level instrument is further provided. The level instrument is placed at a surveying location through the bottom plate, a levelness of the level instrument body is directly adjusted through the leveling mechanism below the level instrument body, and a height of the level instrument body is directly adjusted through the lifting mechanism. In this way, the operation process of the level instrument is simplified, and the overall surveying efficiency is improved.

Abstract: A tape measure including a reinforced or coated tape measure blade is provided. The reinforcement layer is thicker than the metal inner layer of the tape blade. The reinforcement layer provides a reinforced tape blade such that the elongate tape blade may have a pinch load threshold of greater than 30 lbs. and/or a pinch height at break of less than 1.5 mm.

Abstract: A tape measure, including a tape measure blade having a cross-sectional profile to increase standout is provided. The profile has a curved shape that increases standout. The tape blade may have a flat width greater than or equal to 29 mm and less than 32 mm.

Abstract: Provided is a calibration-free positioning method and system.

Abstract: A joist alignment tool is provided. The device includes a first planar base perpendicularly affixed to a second planar base at a junction. A first pair of sidewalls extend from opposing sides of the first planar base defining a first channel therebetween. A second pair of sidewalls extend from opposing sides of the second planar base defining a second channel therebetween. An opening is disposed through one of the second pair of sidewalls at the junction. A first aperture is disposed through one of the first pair of sidewalls, and a second aperture is disposed through one of the second pair of sidewalls. A first clamp is engaged with the first aperture and can frictionally engage an object disposed within the first channel. A second clamp is engaged with the second aperture and can frictionally engage an object disposed within the second channel.

Abstract: A tool includes a first body portion having opposite first and second recesses facing toward one another about a space, wherein the opposite first and second recesses are configured to contact opposite sides of a first component disposed in the space. The tool includes a second body portion configured to rotate relative to the first body portion, wherein the second body portion is configured to contact a reference surface relative to the first component. The tool further includes an angle meter configured to measure an angle of the first component based on an angular position of the second body portion relative to the first body portion.

Abstract: A geodetic surveying instrument to move a measurement light beam into a desired measurement direction in space, comprising at least one movement axis which is motorized, providing a positioning of the measurement direction of the geodetic surveying instrument, and an instrument-encoder at the movement axis configured for deriving the measurement direction as a measurement value of the geodetic surveying instrument. The geodetic surveying instrument comprises a transmission link of the movement axis of the geodetic surveying instrument to a motor axis of a stepper motor, which transmission link is configured with a gear reduction and a slipping clutch arrangement, and wherein the stepper motor comprises a rotational motor-encoder on its motor-axis and is driven by a motor controller that provides a field oriented control of phase currents of the stepper motor, which field orientation is derived based on the rotational motor-encoder.

Abstract: A combination measuring tape/chalk marker holder includes a main housing and a chalk retention pocket. The main housing has a main housing shell with a base and a back plate. The main housing is an equilateral triangular prismatic body with two outwardly curved lateral walls meeting at an apex. Within the housing, a locking reel holding a flexible measuring tape is releasably engaged with a locking hub formed on the back plate. The measuring tape extends through a portal formed in one of the outwardly curved lateral walls. The chalk retention pocket is fixed to and extends from the back plate. The pocket has a base parallel to and coextensive with the main housing base, two parallel lateral walls, and a flexible chalk retention member. The chalk retention pocket is flexible and removably retains a convex lensate marking body. A rotatable foot enables the holder to stand erect.

Abstract: An external controller specifies the direction of a surveying instrument with respect to a laser marking instrument to calculate a first relative angle as an angle relative to the surveying instrument, calculates a second relative angle as an angle relative to a target line based on design information, and calculates a differential angle between the first relative angle and the second relative angle, thereby rotating a marking laser emitter by the differential angle to project marking laser light onto the target line.

Abstract: A means that enables a retractable tape measure, of the type having a housing, to be used hands-free for measuring across the top of a body includes: (a) a base, (b) a plurality of rods, each with distal and a proximal ends, with each of the rods' proximal ends attached to the base's upper portion in a manner that extends them perpendicularly from this base, (c) a plurality of openings in the bottom surface of the housing, with each of these opening is configured to allow the rods' distal ends to pass through these opening, (d) a drive mechanism, located in this housing, that is configured to cause the rods' proximal ends to temporarily move the base either away from or towards the housing's bottom surface, and (e) a portion of this drive mechanism configured to control its operation.

Abstract: A knob (1), for correctly laying tiles, comprises a first jaw (10) and a second jaw (20) which are connected to each other in such a way that said knob (1) can adopt a clamped configuration, in which the first and the second jaw (10,20) are in contact with each other, and a wide apart configuration, in which the first and the second jaw (10,20) are not in contact with each other.

Abstract: A system and method of calibrating a laser tracker is provided. The system includes a support system for quickly and easily moving an artifact to a desired position and orientation and for holding the artifact in the position and orientation. An adjustable alignment mirror is coupled to a first end of the artifact so that the more accurate ranging system of the laser tracker can be isolated to determine a reference length of the artifact. Additional measurements are then taken to exercise one or more error source within the tracker. The support system includes a positioner and a support beam for positioning and supporting the artifact. The artifact is coupled to the support beam using kinematic clamps that are designed to reduce or eliminate errors associated with over-constraining the artifact. The artifact is movable between a deployed configuration for use and a stowable configuration for ease of storage and transportation.

Abstract: An apparatus for measuring an angle between a longitudinal axis of a sample container inserted into an opening of a sample container carrier and a reference ray, the apparatus comprising a first accelerometer being fixable to the sample container and being adapted to generate a number of first accelerometer signals being dependent on the orientation of the sample container, and a calculation unit being coupled to the first accelerometer and being adapted to calculate the angle depending on the number of first accelerometer signals.