Abstract: A device for simultaneously measuring and adjusting the tool holding portion of a spindle. The device has a body defining a datum surface providing a magnetic portion and an indicator portion. A socket extends from the magnetic portion, the socket dimensioned and adapted to receive and seat a first component of the tool holding portion on the magnetic portion. A compressible indicator tip extends in an outward-biased manner from the indicator portion, wherein a distance from the distal end of the indicator tip and the indicator portion of the datum surface is displayed along the body.

Abstract: A device for contactlessly determining the straightness of at least one long product, where punctiform or linear measuring radiation is moved by a radiation source module over the long product at least transversely to the longitudinal direction of the long product during a measuring cycle. The intensity of detection radiation coming from an area of incidence of the measuring radiation is recorded by a radiation detection module in a time-resolved manner and is supplied to a control and evaluation unit. The spatial position of the areas of incidence and thus the straightness of a long product can be determined from location information regarding the areas of incidence in the longitudinal direction and from characteristic intensity values of the detection radiation. For a calibration, a reference straightness can be determined by carrying out multiple measuring cycles by rotating a long product of unknown straightness.

Abstract: A tool set that can easily check positions of positioning pins for a workpiece even in an environment using a liquid is disclosed. The tool set includes: a reference tool to be placed on the holding stage; a dummy workpiece to be placed on the reference tool; and a check pin having a cylindrical circumferential surface. The reference tool has a central protrusion having a cylindrical circumferential surface. The dummy workpiece has a circular through-hole having a diameter larger than a diameter of the circumferential surface of the central protrusion. A diameter of the check pin is smaller than a value determined by dividing a difference between the diameter of the circular through-hole and the diameter of the circumferential surface of the central protrusion by 2.

Abstract: The present disclosure provides a system and method for a vehicle radar inspection. A system for inspecting an assembled state of a radar sensor mounted in a vehicle may include a center portion configured to align the vehicle to a reference inspection position; a mobile terminal configured to connect with an external source of communication; a scan portion configured to photograph the radar sensor at a plurality of scan positions using a terahertz wave; and a server configured to match a plurality of scan images photographed by the scan portion, to detect a three-dimensional coordinate of the radar sensor, to transmit a sensor correction value through the mobile terminal, wherein the sensor correction value is determined based on an assembly tolerance that compares with a design plan of the vehicle, and to correct a sensor angle value of the radar sensor.

Abstract: A jig for inspecting a display module, the display module including a display module body and a lug, the jig including a bottom plate and a cover plate, the cover plate operatively covering the bottom plate; the bottom plate being provided with a first flat portion and the cover plate being provided with a second flat portion, wherein the bottom plate is provided with a first concave portion surrounded by the first flat portion, and/or the cover plate provided with a second concave portion surrounded by the second flat portion, the first concave portion and/or the second concave portion form(s) a receiving area for the display module body, and the first flat portion and the second flat portion are configured to clamp the lug.

Abstract: An evaluation device for an elevator system includes a self-propelled drive unit including a motor secondary to travel along a motor primary in a hoistway, and at least one diagnostic sensor.

Abstract: Exemplary apparatuses for centering and/or leveling a pedestal of a processing chamber may include a mounting block having a central axis, a set of first gauges mounted on the mounting block, and a set of second gauges mounted on the mounting block. The set of second gauges may be mounted substantially perpendicular to the set of first gauges. The plurality of first gauges may be configured to obtain measurements indicative of a degree of parallelism between a gas distribution plate of the processing chamber and the pedestal. The plurality of second gauges may be configured to obtain measurements indicative of a degree of axial alignment of a ring member of the processing chamber and the pedestal. The exemplary apparatuses may be used for centering and/or leveling the pedestal under vacuum.

Abstract: A mounting apparatus for mounting an electronic component onto a substrate includes: a mounting tool (14) configured to hold the electronic component by a holding surface (14a) as a tip end surface of the mounting tool; a movement mechanism configured to move the mounting tool (14) relatively with respect to the substrate; an angle detection mechanism configured to measure an inclination of a planar-plated measurement jig (64) held by the holding surface (14a); and a controller configured to control driving of the mounting apparatus, wherein during inspection of the holding surface (14a), the controller causes the mounting tool (14) to hold the measurement jig (64), and the angle detection mechanism to measure the inclination of the measurement jig (64). With this, a mounting apparatus capable of measuring a condition of the holding surface of the mounting tool more correctly is provided.

Abstract: According to one aspect of this disclosure a comparative measurement gauge is described. The gauge includes a portable U-shaped body having two arms connected by an intermediate portion, wherein at least one of the arms engages a part to be measured. At least one rod is disposed in a space defined between the two arms. A slide is disposed on the rod in the space and one portion of the slide is attached to a measurement probe. A measurement indicator extends from one of the arms. The measurement indicator includes a tip that is adjacent to the slide. As the slide moves along the rod to measure the part the measurement indicator provides a measurement value.

Abstract: A checking fixture for a steering knuckle. In use, a workpiece is mounted on the checking fixture, three locating points of the workpiece in the X direction respectively correspond to a supporting pin I, a supporting pin II and a supporting pin III, a locating taper hole limiting the motion of the workpiece in a YZ plane corresponds to the floating pin, and a locating point of the workpiece in the Y direction levelly fit to a supporting surface of a locating pin; after location is completed, the workpiece is tightly clamped by a jacking clamp, a press clamp I and a press clamp II. The checking fixture for the steering knuckle can measure the position accuracy of each hole of the steering knuckle workpiece, and can detect whether the relative height of the flange plane of the workpiece relative to the X-direction locating points is qualified.

Abstract: A length-measuring device includes a scanning carriage for scanning a measuring graduation that is to be guided longitudinally in the measurement direction on a guide surface. A coupling couples the scanning carriage to a drive dog rigidly in the measurement direction and resiliently transversely to the measurement direction. A first spring is disposed between a connecting element of the coupling and the drive dog and exerts a pressure force on the scanning carriage at a first position so as to press the scanning carriage against the guide surface. A second spring is disposed between the connecting element and the scanning carriage. The second spring is spaced apart from the first spring in the measurement direction and exerts a pressure force on the scanning carriage at a second position spaced apart from the first position in the measurement direction so as to press the scanning carriage against the guide surface.

Abstract: A method for measuring a deflection amount of a columnar structure includes the following steps. The method includes placing a longitudinal direction of a columnar structure in a direction parallel to a ground to place the columnar structure on a support member that supports the columnar structure such that the columnar structure is rotatable around an axis in the longitudinal direction; determining that the columnar structure placed has stopped rotating under its own weight around the axis; and measuring, after the stop of the rotation is determined, measuring a distance in a vertical direction between a straight line connecting both ends in the longitudinal direction of the columnar structure and a curved line along a shape in the longitudinal direction of the columnar structure.

Abstract: A substrate position alignment device includes a plurality of rotary tables which hold a plurality of substrates to be vertically spaced apart from each other, a rotation drive device which synchronously rotates the plurality of rotary tables, a plurality of support elements which support the substrate on the rotary table, support element drive members which independently and horizontally move the plurality of support elements between inward positions and outward positions, and up-down devices which move up and down the plurality of support element drive members. The substrate position alignment device operates the rotation drive device, the support element drive members and the up-down device based on the positions of notches of the substrate, to align the notches of the plurality of substrates with a reference rotational angle position.

Abstract: A three-dimensional printing device includes a base, a holder disposed above the base, a printing head fixed on the holder and including a nozzle configured to discharge a resin material, a stage disposed in the base below the printing head configured to hold the resin material discharged from the nozzle, and a stage moving mechanism configured to move the stage with five or more degrees of freedom.

Abstract: A method for acquiring the image of an object, such as a part of a hand, that is rolled on a detection surface. The method comprises acquiring the image on an area on which the object is rolled that is located within the detection surface. The method comprises: detecting an initial position of the object positioned on the detection surface; and locating the rolling area within the detection surface as a function of the initial position in which the object has been positioned on the detection surface.

Abstract: A substrate angle alignment device includes a plurality of holding sections which hold a plurality of substrates, respectively in such a manner that the plurality of substrates are placed to be oriented horizontally and arranged vertically, a first up-down unit including a plurality of first support sections, and a second up-down unit including a plurality of second support sections. The device repeats a series of angle alignment operations in which the plurality of holding sections are rotated together to perform angle alignment of selected one of the plurality of substrates, and the first support section corresponding to the aligned substrate is moved up to lift up the substrate with the first support section. The device moves the plurality of second support sections up together to lift up the plurality of aligned substrates supported on the plurality of first support sections, with the plurality of second support sections, respectively.

Abstract: The present invention relates to an apparatus, system, and method of using the same for connecting and spacing grating and the like. Specifically, the present invention relates to connecting and spacing wire gratings, for example wire gratings used as vehicle tire support material or for mounting wheel chocks thereon in the transportation of automobiles. Even more specifically, the present invention may be used to connect a plurality of wire gratings together and to space in a first direction the plurality of gratings apart from each other at multiple selectable distances in one configuration. In a second configuration, the present invention may be used to space in a second direction the plurality of gratings from other objects, such as a wall or guard rail. The second configuration may be used in multiple orientations in order to provide multiple different spacing distances.

Abstract: A surface profiler including at least one front support wheel and at least one rear support wheel for travelling along the surface of a profile to be measured, the rotational axes of said wheels being longitudinally spaced, and the wheels contacting the surface being profiled in a collinear manner. A frame carried on the wheels carries at least one inclinometer and at least two vertical distance measuring apparatus such as lasers, and may also carry an optical encoder. The lasers are collinear with each other and with the wheels. Incremental to measurements of inclination angles provided by the inclinometer, together with incremental measurements of distance to the surface being measured provided by the lasers, produce a continuous, high resolution mathematical series of elevations representing the surface profile, including reproduction of surface features that are smaller than the distance between the wheels.

Abstract: A corrected ball diameter calculating method includes: preparing a reference gauge that has at least one reference peripheral surface of an outer peripheral surface and an inner peripheral surface; valuing of diameter values of the reference peripheral surface at a plurality of different height positions from a bottom surface of the reference gauge; calculating calibrated diameter values per each of the height positions; placing the reference gauge on the rotary table and causing the stylus tip to touch a plurality of measurement sites on the reference peripheral surface at each of the height positions to calculate measured diameter values that are diameter values of a circle passing through the neighborhood of center points of the stylus tip; and calculating the corrected ball diameters per each of the height positions from the calibrated diameter values and the measured diameter values that are calculated per each of the height positions.

Abstract: A flatness measuring apparatus includes a measuring assembly and a movable assembly. The measuring assembly includes a measuring unit. The measuring unit includes a supporting base, a loading block, and a limiting block mounted above the supporting base. The supporting base defines a receiving hole. The loading block is removably received in the receiving hole. The loading block is coplanar with the supporting base and cooperatively defines a limiting channel. A distance between the limiting block and the supporting base is substantially the same as a maximum allowable height of a workpiece, thereby only allowing qualified workpieces to slide therethrough and catching unqualified workpieces. The movable assembly connects to the measuring assembly to drive the loading block to disengage from the receiving hole and make the unqualified workpieces drop down from the measuring unit.

Abstract: The method and equipment relates to the measurement of deflections of filter sectors in a disc filter. The filter discs in the disc filter are constituted by a number of filter sectors, and the distance between a position fixed relative to the filter, most commonly the scraper itself, and the filter surface is conventionally measured by manual measurement methods. The equipment is instead used that has a measuring head with a quick-release coupling for its mounting fixed in the filter, and a position sensor in the measuring head that measures the distance between the measurement arrangement and the surface of the filter disc in order to form momentary measurement results. The momentary measurement results are transferred by a data transfer link from the measurement arrangement to a data collection unit PC that has a memory.

Abstract: An alignment device allows hinges from an old door being replaced to be transferred to a new door in the corresponding position to ensure that the new door is properly aligned in the door frame. The tool has an elongate channel that is placed next to the door in the height direction. A stopper aligns a comparable tool with a top edge of the door having its hinges removed. Brackets secure the channel to the door and ensure that the channel is parallel to the door. Once the tool is fixed relative to the door, the hinges can be attached to the channel. After the hinges are attached to the channel, they are removed from the existing door. The tool can now use to install hinges on a new door at a remote time or place from the hinges.

Abstract: An alignment tool assembly (200) is provided. The alignment tool assembly (200) includes a base (201) and a mounting plate (202) coupled to the base (201). The alignment tool assembly (200) further includes one or more alignment blocks (204, 205, 205?) movable with respect to the mounting plate (202). One or more gauge apertures (250) are formed in the mounting plate (202) proximate an alignment block (204, 205, 205?) of the one or more alignment blocks (204, 205, 205?) sized and positioned to receive a portion of an alignment gauge (300).

Abstract: An alignment mark definer is configured to provide a geometrical definition for an actual alignment structure to be formed at a temporary surface of a substrate based on a desired appearance of the alignment mark and on an expected alteration of an appearance of the actual alignment structure caused by a deposition material deposited on the temporary surface and the actual alignment structure.

Abstract: A test device for testing whether a coaxial accuracy between a test hole and a standard hole of an object is qualified or not includes a base to support the object, a fixing member to fix the object, and a positioning member and a testing member respectively mounted to a bottom and a top of the base. The positioning member includes a positioning pole to be inserted into a standard hole of the object. The testing member includes a testing pole slidably relative to and aligning with the positioning pole. A diameter of the testing pole is set to be equal to a standard diameter of a test hole subtracting a coaxial tolerance of the test hole. If the testing pole is capable of being inserted into the test hole, the coaxial accuracy between the test and standard holes of the object is qualified.

Abstract: A method of measuring a flatness of a chamfering table includes the steps of positioning a substrate on the chamfering table, chamfering an edge of the substrate a plurality of times with a chamfering wheel while varying a relative height of the chamfering wheel with respect to a height of the substrate, locating symmetric chamfered points where the chamfered edge is top-bottom symmetric, matching values of the relative height of the chamfering wheel to the found symmetric chamfered points, and obtaining the flatness of the chamfering table from the values of the relative height of the chamfering wheel that are matched to the symmetric chamfered points.

Abstract: A portable device for measuring a deflection of a surface, comprising an elongate frame having a first end and a second end and a first datum surface, a first removable reference support adjacent the first end, a second removable reference support adjacent the second end, a deflection gauge attached to the elongate frame between the first removable reference support and the second removable reference support, and wherein the deflection gauge engages and measures a deflection of the surface relative to the first removable reference support and the second removable reference support.

Abstract: An automated testing system includes systems and methods to facilitate inline production testing of samples at a micro (multiple microns) or less scale with a mechanical testing instrument. In an example, the system includes a probe changing assembly for coupling and decoupling a probe of the instrument. The probe changing assembly includes a probe change unit configured to grasp one of a plurality of probes in a probe magazine and couple one of the probes with an instrument probe receptacle. An actuator is coupled with the probe change unit, and the actuator is configured to move and align the probe change unit with the probe magazine and the instrument probe receptacle. In another example, the automated testing system includes a multiple degree of freedom stage for aligning a sample testing location with the instrument. The stage includes a sample stage and a stage actuator assembly including translational and rotational actuators.

Abstract: A rail cant measurement tool and associated methods enable users to measure rail cant. The measurement tool comprises a reference assembly, and a cant angle measurement assembly. The reference assembly comprises a track plane reference bar. The cant angle measurement assembly comprises a web-engaging arm assembly, a spring-biased lock-release mechanism, a rail cant indicator, and a rail cant linear adjustment mechanism. The web-engaging arm assembly comprises pivot arms and web rollers. The pivot arms each comprise upper arm ends and lower arm ends. The upper arm ends are attached to the lock-release mechanism. The reference bar engages opposed rails and the cant angle measurement assembly engages a select rail of the opposed rails. The rail cant indicator indicates rail cant information as determined from the track reference plane and the running surface of the select rail.

Abstract: A guide for uniform spacing and affixing of construction materials, comprising a guiding member and at least one spacing member.

Abstract: In a parallel slider device, the two sliders are allowed to move in a smooth manner without interfering with each other. A same position command is given to a front servo controller for a front linear servo motor and a rear servo controller for a rear linear servo motor, and the front servo controller and the rear servo controller are provided with mutually different control gains.

Abstract: The invention is includes a series of dimensional scales (linear measuring device) on the top surface of a miter saw table. The scales allow for measurements to be located or obtained on the saw table relative to the saw fence and relative to the saw blade. The scales may replace the need for a hand held tape measure or ruler for measuring or marking the saw table surface when cutting crown molding or other materials. The scales could be placed on or in a saw during production by a manufacturer. The scales could be placed on or in a material to be placed on a saw during production by a manufacturer. The scales could be placed on or in a material to be placed on an existing saw.

Abstract: Methods for determining the planarity of two components of a semiconductor processing tool, such as a 3D wafer bonder are disclosed. The two components may be fixtures, chucks, or platens of the tool. A test wafer comprising multiple solder balls is compressed and the deformity of multiple solder balls is measured to assess the planarity of the tool. The measurement of the deformed solder balls may be performed manually, or with an automated wafer inspection tool, which may use lasers to measure the height of each solder ball. The planarity of the two components is computed based on the height of the deformed solder balls.

Abstract: An alignment device allows hinges from an old door being replaced to be transferred to a new door in the corresponding position to ensure that the new door is properly aligned in the door frame. The tool has an elongate channel that is placed next to the door in the height direction. A stopper aligns a comparable tool with a top edge of the door having its hinges removed. Brackets secure the channel to the door and ensure that the channel is parallel to the door. Once the tool is fixed relative to the door, the hinges can be attached to the channel. After the hinges are attached to the channel, they are removed from the existing door. The tool can now use to install hinges on a new door at a remote time or place from the hinges.

Abstract: A flatness measuring apparatus includes a measuring assembly and a movable assembly. The measuring assembly includes a measuring unit. The measuring unit includes a supporting base, a loading block, and a limiting block mounted above the supporting base. The supporting base defines a receiving hole. The loading block is removably received in the receiving hole. The loading block is coplanar with the supporting base and cooperatively defines a limiting channel. A distance between the limiting block and the supporting base is substantially the same as a maximum allowable height of a workpiece, thereby only allowing qualified workpieces to slide therethrough and catching unqualified workpieces. The movable assembly connects to the measuring assembly to drive the loading block to disengage from the receiving hole and make the unqualified workpieces drop down from the measuring unit.

Abstract: In an embodiment, a tile spacer for providing spacing between adjacent tiles during installation on an installation surface includes a body portion defining a substantially planar surface, a flange portion extending outward from the body portion along the planar surface and at least one arm member extending from the flange portion substantially perpendicular to the planar surface and configured for insertion between adjacent tiles

Abstract: In one aspect, a force platform includes indicators at known locations with respect to applied forces used during the calibration of the force platform, the indicators being usable by a spatial measurement system to determine the location of the indicators in a coordinate system external to the force platform.

Abstract: An alignment device which comprises an alignment member, and a measuring mechanism for measuring the orientation of the alignment member. The measuring mechanism is retained by the alignment member.

Abstract: An intake manifold (2) of comburent air is presented for an internal combustion engine (1) provided with a recirculating conduit (60) of exhaust gases. The intake manifold (2) includes a first inlet mouth (213) of the comburent air, a second inlet mouth (214) in communication with the recirculating conduit (60) of the exhaust gases, and a plurality of outlet mouths (201), having a wall (7) positioned in front of each of the outlet mouths (201) and configured for dividing the internal volume of the intake manifold (2) into two chambers (215, 204), the first chamber (215) being placed in communication with the first inlet mouth (213) and the second inlet mouth (214) and the second chamber (204) being placed in communication with the outlet mouths (201), the wall (7) defining an opening (70) adapted for placing the first chamber (215) and the second chamber (204) in communication.

Abstract: A testing device for testing whether planeness of top and bottom surfaces of an object is within an allowable range includes a rack, a motion mechanism, a transmission mechanism, a control mechanism, a testing mechanism, and a display. The motion mechanism is slidably connected to the rack and supporting the object. The transmission mechanism is fastened to the rack and the motion mechanism. The testing mechanism includes two separated rows of sensors. The object extends through the testing mechanism, between the rows of sensors. The sensors above the object measure distances between the sensors and corresponding dots of a top surface of the object. The sensors below the object measure distances between the sensors and corresponding dots of a bottom surface of the object. The sensors send signals about the distances to the control mechanism.

Abstract: A test device for testing whether a coaxial accuracy between a test hole and a standard hole of an object is qualified or not includes a base to support the object, a fixing member to fix the object, and a positioning member and a testing member respectively mounted to a bottom and a top of the base. The positioning member includes a positioning pole to be inserted into a standard hole of the object. The testing member includes a testing pole slidably relative to and aligning with the positioning pole. A diameter of the testing pole is set to be equal to a standard diameter of a test hole subtracting a coaxial tolerance of the test hole. If the testing pole is capable of being inserted into the test hole, the coaxial accuracy between the test and standard holes of the object is qualified.

Abstract: A leveling spacer for laying wall tiles, paving tiles and the like with the interposition of gaps, which comprises a base with spacing protrusions for the abutment of the edges of corresponding tiles so as to define the width of the gaps, a threaded stem, which is fixed at right angles to the base in at least one easily breakable point, a knob for clamping and removing the threaded stem, which comprises a female threaded portion adapted to be screwed to the threaded stem.

Abstract: The tool for detecting the verticality between an axle hole and a milling plane comprises a base provided with a horizontal plane and a vertical plane which are vertically intersected, a vertical through hole is provided, a locating plate is vertically arranged and located in the middle of the vertical through hole, the locating plate is fixed with the vertical plane, a horizontal through hole is provided on the locating plate, two vertical pin rods are arranged at a position of the base away from the vertical through hole, the vertical pin rods are symmetric with respect to the axis of the horizontal through hole, a detection rod can be inserted into the horizontal through hole.

Abstract: A method for determining an object angle, especially for a driver assistance system in a motor vehicle, includes the steps of determining directional angles of the object with respect to two sensors, determining the object angle based on the directional angles, determining a cross-misalignment angle as the difference of the determined directional angles, determining a validity signal indicating the validity of the object angle based on the cross-misalignment angle and compensating for the influence of a relative misalignment of the sensors on the determined object angle based on the cross-misalignment angle.

Abstract: Disclosed are an alignment system and an alignment method for aligning a radar apparatus such that the alignment is not significantly influenced by tolerances in an assembly process of a bumper rail, a front end module, and a vehicle body.

Abstract: A system for positioning post sleeves is provided including a pair of post sleeve positioning devices and a spacing mechanism. Each post sleeve positioning device is configured to receive a respective post sleeve and to enable selective adjustment of a position and orientation of the respective post sleeve. The spacing mechanism is coupleable between the pair of post sleeve positioning devices to determine or control the position and orientation of the post sleeve received by one of the pair of post sleeves positioning devices relative to the post sleeve received by the other one of the pair of post sleeve positioning devices. Related methods are also provided.

Abstract: An apparatus includes a base, a cover and a rotating shaft. The base includes a platform formed on the base for placing a workpiece, a supporting post protruding from the platform, and a pair of opposite connecting seats protruding from an end of the base. Each connecting seat defines a pin hole. The cover includes a board portion defining a positioning hole corresponding to the supporting post, a hollow rotating portion defining a through hole, and a connecting portion interconnecting the board portion and the rotating portion. The rotating shaft extends through the rotating portion with two ends received in the pin holes, rotatably interconnecting the cover to the base. The radius of the through hole is larger than that of the rotating shaft. When the board portion presses on the workpiece, the supporting post lifts the board portion.

Abstract: A method and apparatus for inspecting a surface of an object. Data from measuring the surface of the object is obtained to form surface data for the object. A range of frequencies for features on the object is selected based on a range of distances between adjacent peaks for the features. The features are formed by a tool moving along a number of paths. Desired surface data for the features is obtained from the surface data using the range of frequencies selected. A determination is made as to whether the desired surface data for the features meets a policy specifying a desired surface for the object. In response to an absence of a determination that the desired surface data for the features meets the policy, the object is reworked.

Abstract: The present invention relates to a disk protrusion detection/flatness measurement circuit and a disk glide tester, in which protrusion detection and average value calculation can be performed without switching signal processing circuits of two systems, one for the protrusion detection of a disk and the other for the average value calculation with respect to a track or a sector of the disk. This also makes it possible to reduce the size of the measurement circuit. In the protrusion detection/flatness measurement circuit, a signal from a protrusion detection sensor is amplified and converted from an analog signal to a digital signal. The signal passes through a band-pass filter to obtain a digital signal with a predetermined bandwidth. Then, peak detection and average value calculation processes are applied in parallel to the obtained digital signal. Thus, pass/fail decision of the disk can be made based on the detected peak and average values.

Abstract: A testing device for testing whether planeness of top and bottom surfaces of an object is within an allowable range includes a rack, a motion mechanism, a transmission mechanism, a control mechanism, a testing mechanism, and a display. The motion mechanism is slidably connected to the rack and supporting the object. The transmission mechanism is fastened to the rack and the motion mechanism. The testing mechanism includes two separated rows of sensors. The object extends through the testing mechanism, between the rows of sensors. The sensors above the object measure distances between the sensors and corresponding dots of a top surface of the object. The sensors below the object measure distances between the sensors and corresponding dots of a bottom surface of the object. The sensors send signals about the distances to the control mechanism.