Abstract: The Professional Portable Mitre Saw Bench was conceived for the purposes of utilising a Mitre Saw on a work site faster. This saw bench was also designed to be lightweight and weatherproof. A measuring tape affixed to the bench in both directions from the Mitre Saw allows a piece of lumber to be placed on the bench, up to the desired measurement and cut without the need to produce a tape measure or pencil. The ‘Slider and Flag’ that are run along a rail above the measuring tape on the bench are designed to expedite accurately repeated lumber cuts. The ‘Flag’ pivots on a bolt on the slider to rise when not needed and lowered when it is. The ‘Slider’ that the flag is attached to is moveable along the rail to get to the position needed for repeat cuts. The result is a simply designed fast cutting Saw bench.

Abstract: Described is a worktable system comprising a supporting structure (1) and fastening means (13) supported by said supporting structure (1) for fastening a workpiece, characterized in that said fastening means (13) are adapted to provide directional guidance for movement of a tool, in particular a power tool, to machine the workpiece while it is fastened by said fastening means (13).

Abstract: A table top and a worktable are combined to form a workbench adapted to receive a plurality of work tools. Various tools can be quickly connected and disconnected. This facilitates changing of tools on the workbench.

Abstract: A portable workdeck assembly is described as including a specially configured planar work surface on whose upper surface may be mounted a number of distinct bench mounted tools and related accessories, and whose lower surface carries user adjustable means enabling the deck assembly to be interfitted onto a plurality of variously sized and shaped supporting base members. The workdeck assembly therefore readily facilitates the portability of a set of familiar bench mounted tools and accessories to various sites. In a preferred baseline embodiment, one or more rigidifying channels longitudinally disposed on the work surface bottom carry a number of two-axis adjustable feet which enable the workdeck assembly to interfit snugly with variously sized rolling tool cabinets. In an alternate embodiment, a number of cross members with resilient feet are mounted on the work surface bottom enabling the workdeck to be non-slidingly positioned atop any suitably strong horizontally disposed base member.

Abstract: A portable work bench station having a base with a flat plate having four holes for securing to the work bench. The base has a longitudinal hollow receiver opening to the outside edge of the work bench. The portable work bench station has a receiver arm having outside dimensions smaller than the inside dimensions of the longitudinal hollow receiver so the receiver arm mates to and slidingly engages the hollow interior diameter of the longitudinal hollow receiver in telescopic fashion. The receiver arm has a mounting plate. The portable work bench station has an L-shaped tool mount which adjustably attaches to the mounting plate and to which is attached the tool to be used. The L-shaped tool mount has a horizontal wing and a vertical wing. The vertical wing is secured to the mounting plate and the horizontal wing has a plurality of apertures for receiving a fastening device such that a tool, vise, grinder, etc., can be securely fastened to the L-shaped tool mount.

Abstract: A table for portable miter saws or the like comprising a hinged flat rectangular surface portions from which depends a centrally located, longitudinal keel. A sawhorse-like collapsible stand of two opposed leg assemblies forms a keel gap or slot upon erection within which the longitudinal keel snugly fits, thereby supporting the table surface. The leg assemblies have upper and middle cross members between end legs and the leg assemblies are attached at the end legs at each end thereof by upward folding hinge brackets. The upper cross members are trapezoidal in cross section, forming the vertical inner walls of the keel gap or slot when erected. The leg assemblies fold together and the table folds at its hinges for transport and storage. Levelers are provided for supporting a workpiece above the table top surface.

Abstract: A worktable includes two first rails arranged in parallel on a base, two guide rods movable along the first rails in a first direction and a second direction reversed to the first direction, two second rails respectively slidably coupled to the guide rods, a sliding plate fixedly mounted on the second rails, and a positioning device for locking the sliding plate to stop the sliding plate from movement relative to the base.

Abstract: For mounting on the beam of a mobile stand to hold a machine, a bracket assembly includes a bracket body supportable on the beam of the mobile stand, a front clamp mounted in the bracket body for clamping on the beam of the stand, a rear clamp pivoted to the bracket body, and a locking control device pivotally mounted in the bracket body for operation by the user to impart a biasing force to the rear clamp for enabling the rear clamp to be firmly clamped on the beam of the stand so as to further hold down the machine on the beam.

Abstract: A work bench includes an elongated main body including a track portion having first and second spaced apart rail members. A tool mount assembly includes a tool mount having a support structure that supports a tool and a releasable fastener mounted to the support structure to releasably interlock with the track portion so as to releasably mount the tool mount to the track portion. The fastener includes a handle and a retaining member movable along with the handle such that manual movement of the handle to (a) a released position positions the retaining member so that the tool mount can be engaged with or disengaged from the track portion, and (b) a locked position moves the retaining member into forced engagement with the spaced apart rail members to secure the tool mount to the track portion.

Abstract: A power tool, such as, for example a router. In some aspects, a router includes a base, a housing and a hand grip attachable to one of the base and the housing, and the hand grip may be contoured to fit a hand of an operator and may be at least partially formed of an elastomeric material. In some aspects, a router includes a housing and a hand grip connected to the housing. In some aspects, a router is operable above a workpiece and under a table. In some aspects, a router includes a base, a motor housing and an adjustment mechanism supported by at least one of the base and the motor housing for adjusting the position of the motor housing relative to the base. In some aspects, a case for a router includes a base plate operable to support a router with a bit attached to the router.

Abstract: A cutting machine includes: a base; a worktable provided on the base and having a working surface and a lateral side; a cutter provided on the worktable; and an elongate fence having first and second long edges and pivoted to the lateral side of the worktable so as to be rotatable relative to the worktable about an axis. The axis is spaced apart from the first and second long edges of the fence by first and second distances, respectively, and is spaced apart from the working surface of the worktable by a third distance. The first distance is greater than the third distance, while the second distance is not greater than the third distance.

Abstract: A horizontal portable miter panel saw system that is capable of utilizing a wide range of power hand tools and processing plywood panels and other oversized materials. The apparatus is designed to provide safety, accuracy, mobility, capacity, ease of use, and affordability. Four extendable multi-adjustable legs allow the table to be leveled on almost any surface. An adjustable guide control unit is movable in the x, y, and z planes via a chain drive trolley that allows a tool to make any type of cut accurately and without the need for complex measurements. A plurality of tabletop members form the table top, these are extendable and adjustable to allow for plywood panels to be supported by the table.

Abstract: An adjusting device for the angle blocking plate of a planing machine includes a material conveying table having one side provided with a hand wheel. A worm has its outer end connected with the hand wheel and its inner end meshed with the worm gear of a transmission rod that is vertically and axially fitted with a fundamental base. The transmission rod has its upper gear portion extending out of the topside of the fundamental base and meshed with a lengthwise rack secured at the underside of an upper holding frame to be driven to move together. By so designing, the hand wheel can be turned around to quickly and precisely adjust the angle blocking plate to move forward and backward.

Abstract: A worktable apparatus includes a table with a tabletop having a plurality of legs attached thereto. The tabletop has an opening extending therethrough. A panel is hingedly coupled to the tabletop adjacent to the opening and is selectively positionable in a closed position extending over the opening or in an open position exposing the opening. The panel has an upper surface and a lower surface. The panel has central aperture extending therethrough. A plurality of brackets is attached to the lower surface of the panel. The brackets are configured to releasably couple a cutting tool to the lower surface and so that a cutting implement of the cutting tool extends through the central aperture.

Abstract: A table with a working surface has a parallel rail on each side of the working surface. A slide assembly includes a shaft with ends and a pair of brackets. Each bracket has a hole. The holes receive the ends of the shaft. The slide assembly includes cylindrical tunnels. The tunnels slidably receive the rails. An operating assembly has primary and secondary arms. Each arm has a free exterior end and an interior portion. The interior portion is coupled to the shaft. A router is secured to, and depends from, the free end of the secondary arm. Control mechanisms include a scribe. The scribe is secured to, and depends from, the free end of the primary arm. Movement of the primary arm and scribe with respect to a template will cause corresponding movement of the secondary arm and router with respect to work pieces to be routed.

Abstract: A router support assembly includes a table that has a top side, a bottom side, a first side edge, a second side edge, a front edge and a rear edge. The table has a first slot and a second slot each extending therethrough. The first slot extends between the front and rear edges and the second slot extends from the first side edge to the first slot. A first guide is attached to the table and is selectively movable along the first slot. A second guide is attached to the table and is selectively movable along the second slot. A mounting is attached to the table and supports a router a selectable distance from the top side of the table. The mounting is positioned adjacent to the first edge. A router may be attached to the mounting so that a cutting member of the router extends toward the table.

Abstract: A support mechanism for selectively mounting a fixed base or plunge type router on a router table comprises a table plate having top and bottom sides and an opening therethrough having an opening axis, and a carriage beneath the table plate for supporting a router coaxial with the opening axis. Guide posts slidably support the carriage for axial displacement toward and away from the table plate, and adjusting screws rotatable relative to the table plate interengage with the carriage for rotation of the screws to displace the carriage relative to the table plate. The carriage includes a pair of carriage blocks interengaging with the guide posts and adjusting screws, and a router mounting plate which is removably mounted on the carriage blocks. The router mounting plate is provided with a plurality of sets of mounting holes, and each set is for mounting a different model router on the table plate.

Abstract: An angle adjustable sawing table adapted to allow the installation of a circular saw. Wood material is placed at pre-set geometric angles. One end of a gage is placed on a table, and another end of the gage is flush against a measurement member for adjustment to a preset angle.

Abstract: An adjustable power tool attachment for table saws comprises an extension table to enlarge the table saw work surface, and a power tool attached to the bottom of a drop-in plate inserted into the extension table. The power tool can be vertically adjusted to a desired position, and can be lowered below the extension table surface. The table saw and power tool can be used sequentially, and the table saw fence can be used to guide boards or other workpieces to the table saw or power tool. A dado attachment or other power tool can be used in convenient proximity to a table saw for sequential operations, without the user replacing the table saw blades with other cutting elements, or duplicating expensive equipment.

Abstract: A quick shifting and micro-adjusting device for the angle blocking plate of a planing machine includes a material conveying table connected with a fundamental base having a support member extending downward. A shaft able to slide axially has its inner end inserted through the support member and its outer end connected with a hand wheel. A transmission gear is firmly fitted on the intermediate portion of the shaft, having its upper portion properly protruding out of the upper side of fundamental base and able to move together with the shaft. An upper holding frame assembled on the fundamental base has a rack able to be engaged with or disengaged from the transmission gear. Thus, the angle block plate can be shifted quickly and micro-adjusted accurately by pushing, pulling and turning of the hand wheel.

Abstract: A docking frame for a cutting machine includes a docking frame including a docking station having a docking socket for receiving a bottom portion of the cutting machine therein, a locker device provided at the docking station for detachably locking the cutting machine at the docking socket, and a peripheral functional gear provided at the docking station as a supplemental implement for the cutting machine so as to enhance a workability thereof.

Abstract: A mobile saw bench is designed for cutting elongate workpieces such as elongate open or closed steel sections. The mobile saw bench comprises a base structure which is mounted on four castor wheels. Formed continuous with the base structure is an intervening frame structure to which a benchtop is mounted. The saw is appropriately mounted to the benchtop to permit cutting of a workpiece which is located thereon. Importantly, the mobile saw bench further comprises a universal coupling. The universal coupling is mounted to an underside of the benchtop and is releasable clamped to an elongate member which is in the form of a rigid measuring staff. The universal coupling allows pivotal movement of the benchtop relative to the measuring staff which is stationary.

Abstract: A collapsible table assembly having improved portability. A mechanism interconnects the table and supporting legs for moving the legs between a diverging supporting position, a folding position, and a storage position. A saw track assembly includes an upper platform for receiving a cutting device and a lower platform for supporting a workpiece during cutting connected to the upper platform. Each of the upper and lower platform are disposed above the table. A guide pin pivotally attaches the saw track to the table for allowing the saw track to pivot through a plane parallel to the table. A plurality of material supports supported by the table rotate between a first material supporting position for supporting a workpiece and a second unobstructing position for allowing the saw track to freely pivot through the plane without contacting the material supports.

Abstract: An improved portable work bench includes a structural body, and a platform disposed on and frictionally contacting the structural body. In addition, the platform includes an override mechanism for allowing horizontal movement of the platform along the structural body. Further, the portable work bench may include a plurality of legs for supporting the structural body. The structural body may be tubular and preferably has a trapezoidal cross-section. Such work bench can be used by disposing the platform on the structural body, so that the platform frictionally contacts the structural body. Then the user can mechanically override the static friction between the platform and the structural body and move the platform horizontally along the structural body.

Abstract: A tool storage and workbench assembly includes a housing that has a back wall and a peripheral wall that is attached to and extends away from the back wall. The peripheral wall includes a bottom wall, an upper wall, a first side wall and a second side wall. The back wall has a plurality of bores extending therein. A table is hingedly coupled to the bottom wall. The table is selectively positioned in a stored position extending upwardly from the bottom wall and located within the housing or in an extended position extending outwardly away from the back wall. A first door is hingedly coupled to the first side wall and a second door is hingedly coupled to the second side wall. The first and second doors are each selectively positionable in a closed position or in an open position.

Abstract: An improved portable work bench includes a beam, legs for supporting the beam, and at least one bracket having first and second surfaces for contacting respective first and second sides of the beam, wherein the second surface is movable between a first position contacting the second side of the beam, and a second position not contacting the second side of the beam. A spring biases the second surface towards the first position.

Abstract: A precision adjustable woodworking platform that is self-calibrating and designed to move a tool very accurately back and forth horizontally and up and down. One of a number of different woodworking tools is fastened in a saddle that can be rotated and set at a selected angle for operations such as mitering. A floating work table is provided for holding a workpiece at any angle to a cutting tool movement direction. At the same time, the floating work table can be moved precisely forward and backward. The invention woodworking platform is relatively inexpensive, while providing for accurate straight, angled and depth cuts; all without needing external instruments.

Abstract: A system of machining a workpiece with a router bit includes a plate insert for a router table having a work surface over which the workpiece is to be moved. The router is mounted underneath the plate with the bit driven about a bit axis which is at right angles to the table surface and projecting through a bit opening. At least one and preferably two suction openings through the table from the work surface to an opposed side of the table are connected to a common suction duct with the suction opening or openings being at a location spaced from the bit opening and preferably spaced at right angles from the bit axis. The workpiece is moved or arranged on the table surface so as to define a passage for the waste material from the bit to the suction opening. In one embodiment, the openings are arranged inside the area of the end plate of the router and connected to a duct formed in the end plate.

Abstract: A power tool, such as, for example a router. In some aspects, a router includes a base, a housing and a hand grip attachable to one of the base and the housing, and the hand grip may be contoured to fit a hand of an operator and may be at least partially formed of an elastomeric material. In some aspects, a router includes a housing and a hand grip connected to the housing. In some aspects, a router is operable above a workpiece and under a table. In some aspects, a router includes a base, a motor housing and an adjustment mechanism supported by at least one of the base and the motor housing for adjusting the position of the motor housing relative to the base. In some aspects, a case for a router includes a base plate operable to support a router with a bit attached to the router.

Abstract: A cabinet for supporting a platform for a power tool has a body constructed with three or more substantially vertical surfaces. One of the surfaces allows insertion of a removable dustbin. The removable dustbin may have a handle or recess to aid in insertion and removal and may have a window. One of the surfaces allows access to storage compartments, such as a blade/dado storage compartment, an inserts compartment, and a storage shelf compartment.

Abstract: A miter saw table support device includes a table having a panel and a plurality of legs that is are attached to and extend downwardly from the panel. Each of a pair of supports is attached to the top surface of the panel and are positioned adjacent to a front edge of the panel. The supports are spaced from each other such that a base of a miter saw may be selectively positionable between the supports. Each of a pair of guides is attached to one of the supports and extends outwardly away a respective one of the first and second side edges. The guides each have a break therein such that a first section and a second section of each of the guides are defined. Each of the first sections is hingedly coupled to a corresponding one of the second sections.

Abstract: A hinged saw table having a sliding carrier for mounting and sliding a portable table saw. The hinged saw table is mounted adjacent to a forming machine that forms stock that is cut with the portable table saw. Elongate stock exits from an exit aperture in the forming machine, and is directed over the table of the portable table saw mounted upon the movable carrier. The portable table saw may be positioned at the correct point for cutting the stock at a desired length. Square or mitered cuts may be made. For storage purposes, the sliding carrier and table saw may be rotated upward approximately 180 degrees over the top of the forming machine where the carrier and saw rest upside down on a stand. The forming machine may be, for example, a seamless gutter rollformer machine that forms sections of rain gutters for houses or other buildings.

Abstract: A transportable workbench comprises a work surface having at least two locations for receiving and retaining power tools. An adjustable stop is demountably attached to the workbench relative to each location to enable a workpiece while in contact with the stop to be machined by way of a power tool retained at one of the locations. Typically each location comprises a recess or aperture adapted to receive demountably a plate to which a power tool can be secured so that, when the plate with the power tool is mounted in the location, the power tool is presented relative to the work surface to enable the tool to provide a machining operation on a workpiece positioned on or by means of the work surface.

Abstract: A stand for sheet metal tools is provided that may accommodate different types and sizes of sheet metal tools. The stand is intended to be used with portable sheet metal bending brakes, saw tables, coil slitters and coil holders. The stand has a versatile clamping system utilizing detachable anchor plates that may be secured in different locations and positions on the stand. A longitudinal extension may be incorporated as part of the stand or part of the support structure for sheet metal tools and a rear mounted roller table may also be provided in conjunction with the stand.

Abstract: A collapsible table assembly having improved portability. A mechanism interconnects the table and supporting legs for moving the legs between a diverging supporting position, a folding position, and a storage position. A saw track assembly includes an upper platform for receiving a cutting device and a lower platform for supporting a workpiece during cutting connected to the upper platform. Each of the upper and lower platform are disposed above the table. A guide pin pivotally attaches the saw track to the table for allowing the saw track to pivot through a plane parallel to the table. A plurality of material supports supported by the table rotate between a first material supporting position for supporting a workpiece and a second unobstructing position for allowing the saw track to freely pivot through the plane without contacting the material supports.

Abstract: A cutting stand for sheet goods is disclosed that includes supports, with each support including a foot, a lower upright joined to the foot and an angled upper support joined to the lower support. The cutting stand additionally includes a carriage joined to the supports, and sheet goods may be removably mounted on the carriage. The cutting stand also includes a guide movably joined to sheet goods, and the guide is adapted to be removable from the sheet goods.

Abstract: A horizontal portable miter panel saw system that is capable of utilizing a wide range of power hand tools and processing plywood panels and other oversized materials. The apparatus is designed to provide safety, accuracy, mobility, capacity, ease of use, and affordability. Four extendable multi-adjustable legs allow the table to be leveled on almost any surface. An adjustable guide control unit is movable in the x, y, and z planes via a chain drive trolley that allows a tool make any type of cut accurately and without the need for complex measurements. A plurality of tabletop members form the table top, these are extendable and adjustable to allow for plywood panels to be supported by the table.

Abstract: An improved portable work bench includes a beam, legs for supporting the beam, a bracket for supporting at least one of an accessory and a power tool, an axle being disposed near the first end of the beam, and a first wheel disposed on the axle.

Abstract: A collapsible table assembly having improved portability. A mechanism interconnects the table and supporting legs for moving the legs between a diverging supporting position, a folding position, and a storage position. A saw track assembly includes an upper platform for receiving a cutting device and a lower platform for supporting a workpiece during cutting connected to the upper platform. Each of the upper and lower platform are disposed above the table. A guide pin pivotally attaches the saw track to the table for allowing the saw track to pivot through a plane parallel to the table. A plurality of material supports supported by the table rotate between a first material supporting position for supporting a workpiece and a second unobstructing position for allowing the saw track to freely pivot through the plane without contacting the material supports.

Abstract: An adjustable power tool attachment for table saws comprises an extension table to enlarge the table saw work surface, and a power tool attached to the bottom of the extension table. The power tool can be vertically adjusted to a desired position, and can be lowered below the extension table surface. The table saw and power tool can be used sequentially, and the table saw fence can be used to guide boards or other workpieces to the table saw or power tool. A dado attachment or other power tool can be used in convenient proximity to a table saw for sequential operations, without the user replacing the table saw blades with other cutting elements, or duplicating expensive equipment.

Abstract: A work table includes a workpiece-supporting box having a bottom plate formed with an outlet port connected to a suctioning device, and a peripheral wall. Left and right guide plates extend inclinedly and downwardly from the peripheral wall toward the outlet port, and have opposing end walls distal from the peripheral wall. A distributor member is disposed between the end walls, and cooperates with the bottom plate to define a lower chamber in fluid communication with the outlet port, and further cooperates with the guide plates and the peripheral wall to define an upper chamber. A working panel is mounted on the peripheral wall, and is formed with apertures for access to the upper chamber.

Abstract: A laminate sheet seaming system for efficiently seaming two laminate sheets. The laminate sheet seaming system includes a base with a cutting channel, and a first locking member and a second locking member mechanically attached to the base for securing a first laminate sheet and a second laminate sheet respectively to the base. The user utilizes a router to create a slot between the two laminate sheets thereby creating an accurate seam between the two laminate sheets.

Abstract: A machine tool has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The position of the cutting tool with respect to the working surface is controlled by a mechanism which elevates the cutting tool with respect to the working surface and angulates the cutting tool with respect to the working surface. The cutting tool is mounted to a support plate which is pivotably attached to the work table. The elevating mechanism includes a threaded rod and a nut which engages a pivoting link. The pivoting link also engages the cutting tool. Rotation of the threaded rod pivots the link which in turn raises and lowers the cutting tool. A spring biases the cutting tool towards its lower position to remove play between the components. The angulating mechanism includes a lever, two cams and a locking rod. Rotation of the lever moves the locking rod longitudinally due to the action between the two cams.

Abstract: An improved portable work bench includes a beam, legs for supporting the beam, and at least one bracket having first and second surfaces for contacting respective first and second sides of the beam, wherein the second surface is movable between a first position contacting the second side of the beam, and a second position not contacting the second side of the beam. A spring biases the second surface towards the first position.

Abstract: An improved portable work bench includes a structural body, and a platform disposed on and frictionally contacting the structural body. In addition, the platform includes an override mechanism for allowing horizontal movement of the platform along the structural body. Further, the portable work bench may include a plurality of legs for supporting the structural body. The structural body may be tubular and preferably has a trapezoidal cross-section. Such work bench can be used by disposing the platform on the structural body, so that the platform frictionally contacts the structural body. Then the user can mechanically override the static friction between the platform and the structural body and move the platform horizontally along the structural body.

Abstract: The machine comprises a movable carriage (5) carrying an application gun (8) filled with pins for application, which is movable above a work station composed of a table 1 carrying an endless belt (2). The machine is provided with a rack (10) for storing a plurality of guns (8) pre-filled with pins, which rack can be accessed by a gripping holder (7) carried by the carriage (5). A detector mounted on the gun can ascertain the absence of a pin in the frame at the application location and instruct the movement of the holder towards the rack. Application in framing.

Abstract: An improved portable work bench includes a structural body, and a platform disposed on and frictionally contacting the structural body. In addition, the platform includes an override mechanism for allowing horizontal movement of the platform along the structural body. Further, the portable work bench may include a plurality of legs for supporting the structural body. The structural body may be tubular and preferably has a trapezoidal cross-section. Such work bench can be used by disposing the platform on the structural body, so that the platform frictionally contacts the structural body. Then the user can mechanically override the static friction between the platform and the structural body and move the platform horizontally along the structural body.

Abstract: The present invention involves a metal structure which has provisions for mounting a common hand held electric circular saw while supporting the wood being cut. Using the same tool, a woodworker may make accurate crosscuts, miter cuts, compound cuts, and rip cuts in a wide variety of wood components. Adjustable support wings can be employed to support long pieces of wood, particularly during the ripping process. Integrally mounted wheels provide means for easily moving the invention from one place to another. The invention's small size and light weight allow it to be stored when not in use.

Abstract: An improved portable work bench includes a beam, legs for supporting the beam, and at least one bracket having first and second surfaces for contacting respective first and second sides of the beam, wherein the second surface is movable between a first position contacting the second side of the beam, and a second position not contacting the second side of the beam. A spring biases the second surface towards the first position.

Abstract: A mobile saw bench is designed for cutting elongate workpieces such as elongate open or closed steel sections. The mobile saw bench comprises a base structure which is mounted on four castor wheels. Formed continuous with the base structure is an intervening frame structure to which a benchtop is mounted. The saw is appropriately mounted to the benchtop to permit cutting of a workpiece which is located thereon. Importantly, the mobile saw bench further comprises a universal coupling. The universal coupling is mounted to an underside of the benchtop and is releasable clamped to an elongate member which is in the form of a rigid measuring staff. The universal coupling allows pivotal movement of the benchtop relative to the measuring staff which is stationary.