Abstract: A tape measure includes a housing arranged to substantially enclose an internal cavity, the housing defining a tape port, and a tape positioned partially within the housing, the tape including an end portion that extends through the tape port and out of the housing. A hook is coupled to the end portion and a finger guard assembly is coupled to the housing and spaced apart from the tape port. The end portion extends through an aperture in the finger guard assembly and is movable between a retracted position in which the hook abuts the finger guard assembly and an extended position in which the hook is spaced apart from the finger guard assembly.

Abstract: A portable articulated arm coordinate measurement machine having an articulated arm that includes a first arm connected to a second arm segment by a connecting segment. An assembly is provided having a first pair of bearings and a first optical encoder and a second pair of bearings and a second optical encoder The first optical encoder includes a first patterned disk and a first read head. The second optical encoder includes a second patterned disk and a second read head. The first and second patterned disks are both fixed with respect to the connecting segment. An electronic circuit is operably coupled to the first read head and the second read head, the electronics being configured to determine three-dimensional coordinates of the probe based at least in part on a first angle and a second angle measured by the first and second optical encoders.

Abstract: A system (12) for measuring geometry of a non-circular twisted strand (10) during a stranding process, the system comprising: a pulley (14), for being rotated by linear displacement of the strand (10) induced by the stranding process; a first encoder (16), for measuring the rotation of the pulley (14), thereby measuring the linear displacement of the strand (10); at least one embracing element (36), for embracing a vertex (38) or another zone (48) of the strand (10), for being rotated perpendicular (60) to the longitudinal position (58) of the strand (10), the embracing obtained by the non-circular character of the strand (10) rather than by friction, thereby allowing sliding the at least one embracing element (36) therealong; and a second encoder (20), for measuring the rotation of the at least one embracing element (36), thereby measuring the twist character of the strand (10).

Abstract: A drill pipe measuring system for efficiently and safely measuring drill pipe on an oil derrick. The drill pipe measuring system generally includes a main member, a tongue member extending outwardly from the main member, a retaining member having a groove that slidably receives the tongue member to secure a measuring tape adjacent to the tongue member and a securing member that is movably attached to an upper end of the main member to selectively retain a hook piece of the measuring tape. The securing member includes a pivot pin that the securing member pivots about and a locking member. When the locking member is in a released state, the securing member is allowed to move with respect to the main member. When the locking member is in the locked state, the securing member is prevented from moving with respect to the main member.

Abstract: Apparatus for positioning anchor bolts in formwork comprises a main body having a longitudinal slot, one or more bolt holders slidable within the slot and each adapted to hold a bolt, and two abutments slidable within the slot outboard of the bolt holders. The main body may be positioned on the formwork, with the abutments outboard of the formwork, and with the bolt holders in the main body slot. After the bolt holders have been laterally positioned relative to the formwork, with their abutments positioned against the formwork, the bolt holders and abutments may be fastened to the main body, and the main body attached to the formwork, thus holding the bolts in position relative to the formwork. In variant embodiments, either or both of the abutments may fixed to or integral with the main body, as may be the bolt holder.

Abstract: A measurement jig is attached to a target member in a form of a blade edge and is used for measuring a position of the target point in combination with a total station. The measurement jig includes a prism mirror that reflects a projected light from the total station, and an attachment member for attaching the prism mirror to the blade edge, in which a mirror center of the prism mirror is aligned with the target point.

Abstract: A device includes a first sensor for making a radial measurement of a tubular component and a support which can drive the first sensor in a circular trajectory in a predefined plane orthogonal to the principal axis of the component. The support includes a principal body that can be attached to the component by a releasable attachment mechanism and a rotary shaft onto which an arm carrying the first sensor is attached to allow displacement of the first sensor in a circular trajectory inside or about the component. The device further includes a second sensor for measuring an angular position of the first sensor for each of its radial measurements, the radial and angular measurements obtained allowing the profile of the component in the predefined plane to be determined.

Abstract: An adjustable radius gauge for measuring and or checking the radius of parts previously made or while forming radii in the process of being formed, as experienced in the bending in a press brake or rolls, dishing presses, spinning, bulging or shrinking machines or by hand or by whatever process of bending or contouring may be used. Also as a layout tool to layout materials in any trade requiring radius layout and required marking.

Abstract: A method and apparatus for detecting, for wheel assemblies on opposite ends of an axle during an alignment angle measurement or inspection process, relative movement or slip between the alignment angle sensor or optical target and the wheel assembly upon which it is mounted. Changes in measurements of invariant characteristics of the solid axle or an associated wheel assembly are observed by an alignment measurement or inspection system as indications of movement or slip between at least one of the alignment angle sensors or optical targets and the associated wheel assembly. Upon detection of a change a measurement of an invariant characteristic, an operator is alerted by the alignment measurement or inspection system to the presence of movement or slip of one or both of the alignment angle sensors or optical targets associated with the wheel assemblies of the axle.

Abstract: A multi-axis type three-dimensional measuring apparatus includes a multi-axis arm mechanism, a probe formed in a distal end of the multi-axis arm mechanism and configured to measure a workpiece, and a projector formed in the distal end of the multi-axis arm mechanism and configured to scale a range of a projected projection image according to a distance between the workpiece and the probe. The projector is configured to project full-scale projection graphics of said workpiece so as to match the full-scale projection graphics with the workpiece regardless of a difference in a distance between the workpiece and the probe, and to project display information identifying a measurement schedule position by the probe.

Abstract: A method reduces errors in a turning device during a determination of coordinates of a work piece or during machining of the work piece. The turning device allows a rotational movement of the work piece about a rotation axis of the turning device. The method includes measuring errors in the turning device on account of deviations between actual positions and actual orientations of the rotation axis, on the one hand, and corresponding ideal positions and ideal orientations of the rotation axis, on the other hand, in a range of rotation angles. Expected error values of the turning device are determined from error measurements and are used to correct the turning device.

Abstract: The present invention relates to laser guided tractor trailer docking apparatuses and methods of making and using the same. Specifically, apparatuses are provided for projecting a laser line emanating from a tractor trailer loading dock to guide a tractor trailer driver backing the tractor trailer into proper position at the loading dock.

Abstract: A gauge sets a height of a lathe cutter to a spindle axis. The gauge comprises an adjustable housing and a level vial, a longitudinal positioning of the level vial to be perpendicular to the spindle axis. A bubble in the level vial is longitudinally centered therein and the adjustable housing is fixed in place relative to the gauge. A chamfered notch in the gauge is slidable along a length of a shaft positioned in the spindle thereof. Flexible prongs secure the level vial relative to the adjustable housing. One of a set screw, a clamp and rubber bands secure the level vial relative to the adjustable housing. A receptacle in the gauge receives a shaft positioned in the spindle and enables laterally adjusting the gauge on a length of the shaft until the contact face of the gauge is laterally aligned with the tip of the lathe cutter.

Abstract: A measuring device includes a support frame, a distance sensor and display (DSD), and a measuring arm. The support frame includes a first support arm, a linking rod, a poke rod, an elastic member, and a second support arm. The DSD includes a movable measuring head. A fixed measuring head is arranged coaxially with the movable measuring head to measure a distance between them. The poke rod includes a poke portion and a resisting portion. When the poke portion is pulled towards the first support arm, the resisting portion can resist against the linking rod, and the linking rod rotates to move the measuring heads.

Abstract: The disclosed invention relates to easy-to-use precision tools that locate the mid-line, or center line, of any symmetrical geometric shape, such as triangles, squares, circles, rectangles, parallelograms, trapezoids, and symmetrical polygons. Given two separate points on the edge of a symmetrical geometric shape, these precision tools identify the center line of the geometric shape between those two points, without the need for additional measurements or mathematical calculations. The precision tools can also be used to identify the center points of symmetrical geometric shapes.

Abstract: A socket and wrench gauge provides for the portable and precise measurement of the dimension of a bolt or nut across the flats thereof, in order to determine the precise size of the socket or wrench required for use therewith. The socket and wrench gauge consists of two parallel jaws with gripping points, with the first jaw and gripping point extending laterally from an elongated slide scale and the opposite jaw and gripping point extending laterally from an elongated body receiver and raceway through which the slide scale operates. The scale consists of two linear rows of dimensional numbers thereon, with each of the numbers corresponding to a distance between the two jaws and gripping points. The numbers are placed longitudinally along the face of the scale for simplicity and greater legibility.

Abstract: A micrometer with good usability is provided. A micrometer has a frame with an anvil at one end and a spindle at another end, the spindle moving closer to or further away from the anvil. The frame is covered with a heat shield cover. The heat shield cover has a first anti-slip part. The first anti-slip part preferably has a plurality of protrusions.

Abstract: A coordinate measuring machine is calibrated by taking optical measurements of an optical flat that includes a grating placed on its surface. The arm of the CMM capable of multi-directional translation in relation to an object is fitted with a white-light interferometric objective and optical measurements are taken of the flat while translating the objective (or the flat) in the coordinate direction subject to calibration. The objective may serve also as the probe of the CMM.

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: Stylus head displacer displaces a stylus head on a first measurement path. A path definer defines the first measurement path. A displacement controller controls the stylus head displacer such that the stylus head displaces along the first measurement path. A position detector detects a position of the stylus head. A depression amount detector detects the depression amount of the stylus head. A measurement results memory stores the position and amount of depression of the stylus head. The depression amount detector outputs an error signal when detecting a measurement error. The displacement controller stops displacement of the stylus head in response to the error signal and displaces the stylus head to a starting point of the first measurement path, and controls the stylus head displacer such that the stylus head is displaced from the starting point to an end point of the first measurement path with a fixed depression amount.