Abstract: The invention relates to a fastening assembly (3) for fastening a test device holder (5) to a force measuring apparatus (1), having a test device holder (5) and a slide part (7) which can be or is arranged on a force measurement tower (9) of the force measuring apparatus (1) in such a way that the slide part can move in the vertical direction of the force measurement tower (9). The test device holder (5) has at least one position defining element (11), and the slide part (7) has at least one counter position defining element (13).

Abstract: A procedure is provided for evaluating the score, snap and edge appearance of wallboard panels, and includes scoring a wallboard panel with a knife at a constant and known force using a benchtop board scoring device; snapping the scored panel in a Universal Board Testing Machine to measure the breaking force, forming a snapped panel edge; measuring a cleanliness of the snapped panel edge by placing a straight edge against the snapped panel edge and measuring gaps between the snapped panel edge and the straight edge in a plurality of locations on a face of the panel, and a plurality of locations on a back of the panel; and averaging all of the measured gaps to create an Index Score.

Abstract: An easily adjustable trimming tool for precisely cutting the edge of carpeting and other types of sheet material. The tool is an easily grippable block that is constructed as a two-part molded plastic block, each part having molded ribs and reinforcing fastener bores that make for a lightweight, yet sturdy device that is economical to manufacture. Cutter assemblies and an adjustable heel allow for an easy adjustment to the length of the blade, so as to enable a long cut, standard cut, or short cut.

Abstract: A surgical tool includes a housing having a driver and a surgical blade configured to be bi-directionally rotated by the driver. The surgical tool also includes a footplate configured to receive the surgical blade. The footplate includes a bottom portion configured to rest on ocular tissue of a patient's eye. The bottom portion includes a slot configured to allow passage of a portion of the surgical blade through the bottom portion of the footplate and into the ocular tissue of the patient's eye. The footplate also includes multiple walls having multiple openings. The openings are configured to receive additional portions of the surgical blade such that the surgical blade is rotatable relative to the footplate. The footplate further includes an additional opening or open side configured to allow viewing of the surgical blade and the slot during use.

Abstract: An elongated bar support device, such as which can be used in singular fashion with an elongated beam or in paired fashion with a flattened sheet board material. An elongated body has a main extending section for supporting an underside of the board or beam. An intermediate section includes a multi-angled recess which extends below the support surface. A forward most portion of each bar support extends in angled or sloping fashion relative to a horizontal extending axis associated with the main extending section. A pair of support dowels extend in linearly spaced apart and inward (cross directed) fashion from the forward extending portion of each bar, to contact opposite surfaces of the plywood or sheet board at support locations forward of the intermediate crosswise recess and opposite a rearward extending direction of the main support section. Upon widthwise sectioning, the opposite surface supporting dowels retain the incised portion in position, without bending or buckling.

Abstract: Disclosed are various embodiments for a measuring and cutting device having, for example, a measuring tool disposed between a first handle component and a second handle component. The measuring tool may comprise a flat, non-flexible material having one or more rows of dimensions affixed thereon for performing quick measurements. The first handle is configured to join the second handle to form a uniform body.

Abstract: A cutting apparatus for cutting an item supported by a surface, comprising a knife (1) comprising a blade (2), a blade support means (3), and an alignment guide (4), having an arm (7) pivotally attached to the knife and a surface contacting means (8) extending in a direction substantially perpendicular to the longitudinal plane of the knife and adapted to contact the surface in front of the blade, in the cutting direction so that, in use, the alignment guide can move with the blade, as the blade cuts into an item whereby if the knife tilts or tends to tilt, this is resisted by virtue of the alignment guide or, if the resistance is overcome, is reduced by raising of one or other lateral edges of the surface contacting means.

Abstract: A knife structure allowing rapid and safe replacement, and secure positioning of, a blade disposed along with its handle structure; wherein the knife structure includes the blade, an engaging and pushing plate, and an engaging and positioning base; a first connecting member is fixed to the engaging and pushing plate and is movably engaged in the blade and the engaging and positioning base; an engaging block is fixed to the engaging and positioning base and is movably engaged in the blade and the engaging and pushing plate; and the first connecting member is locked to the engaging and positioning base upon assembly of the knife structure. Once unlocked via a pushing and unlocking key, the first connecting member can be used to push the engaging and pushing plate and the blade simultaneously, allowing the blade to be pushed out of engagement with the engaging block and then detached for replacement.

Abstract: A method of cutting a tie wrap, bound about at least one wire, using a cutting tool is provided. The method comprising steps of: applying a housing of the cutting tool to the tie wrap, positioning a portion of the tie wrap within a first groove of the housing between first two opposing sidewalls and second two opposite sidewalls of the housing, moving the at least one wire and maintaining the at least one wire a distance away from the tie wrap, moving a circular blade of the cutting tool against the portion of the tie wrap, positioned within the first groove, and at least partially cutting the tie wrap with the circular blade. In some examples, the method further comprises controlling a depth of the circular blade within the tie wrap while the circular blade at least partially cuts the tie wrap.

Abstract: The invention is related with an external fixator that is used in High Tibial Osteotomy (HTO) surgeries, including at least one positioner (1) for gripping the leg from both sides, at least one angulation device (3) and a proximal arch (8) that is connected to the positioner (1), at least one proximal schanz holder (7) on the proximal arch (8), at least one distal schanz holder (4) at the bottom of the angulation device (3), at least one osteotomy block (5) that enables to set the size and the location of the incision on the proximal arch (8), at least one fibular head positioning device (2) that is connected to the angulation device (3) and at least one angular indicator (scale) (19) on the fixator, on which the correction can be adjusted and controlled.

Abstract: A Tool for making controlled cuts using a template cutting guide to facilitate the registration and cutting of a workpiece including, an elongated body portion having a top face and a bottom face separated by a thickness, a cutting guide slot sized to receive and control a cutting blade and extending through the thickness of the elongated body which may include guide lines with equidistant spacing. Additionally, the cutting guide may utilize push pins or fasteners to secure the cutting guide to the workpiece. The cutting guide allows the user to execute precise cuts in material such as mat board using a standard utility knife.

Abstract: A cutter apparatus includes a housing, a blade carrier configured to support a front blade, the blade carrier being coupled to and repositionable in relation to the housing, an auxiliary tool configured to be deployable from another portion of the housing, and a selector repositionable in relation to the housing and configured for mutually exclusively facilitating the user-controlled actions of setting a maximum blade depth to which the front blade is extendable from the housing and activating the auxiliary tool. The selector includes, for example, a biasing component for selectively engaging stop surfaces and a counter-biasing component configured to disengage the one or more biased engagement portions from the stop surfaces in response to a user of the cutter apparatus initiating an action of repositioning the selector along the path.

Abstract: A guide member for an oscillating power tool includes an attachment portion configured to be removably attached to a housing of the power tool and a guide portion that extends from the attachment portion. The guide portion includes a leading edge, a trailing edge, and a guide surface. When the attachment portion is attached to the housing of the power tool, the guide portion is configured to extend beyond the housing in a first direction to position the leading edge portion a predetermined distance apart from the oscillation axis, the predetermined distance being greater than a distance that an accessory tool attached to the power tool extends.

Abstract: A groove cutter for floor sheets which is a tool capable of being operated without using a ruler and can cut a seam, which is created when sheets are laid sequentially on the surface of floor base with an adhesive agent, so that a groove formed along the seam can bridge over both adjacent sheets, comprising a front part, a middle part, a rear part, wherein the front part has a thin guide plate, which is to be inserted into the seam and guides the said tool along the said seam when pushing the tool forward, at the front end, and at least one blade to cut a concave groove at the seam part of the above sheet, which is provided behind the guide plate so as to be detachable, and also a stabilizing member provided at the rear part, which is to be inserted into the concave groove, to stabilize a direction of movement of the tool along the seam.

Abstract: Disclosed is a device and related method for biological manipulation. With greater particularity, disclosed is a novel device and method for uniform cellular manipulation with economies of scale and operational uniformity. The device and related method utilize a cellular wounder (101) to uniformly remove portions of a cell monolayer in a multi-well plate (303) to create uniform cell samples with reduced time and expense to the user. The multi-channel mechanical wounder is a useful tool for performing cellular wounding by providing consistent and even denudation of a defined area of monolayer of cells in standard culture plates. This easy-to-assemble and user friendly device is most applicable for high throughput screening of samples such as in the manipulation of cells for cell migration or wound healing assay preparation.

Abstract: A planar cutting tool has a body comprising a first end, a second end and substantially flat portion that extends between the first and second portions. The substantially flat portion has a substantially flat top surface and a substantially flat bottom surface and a longitudinal axis extending between the body first and second ends. A first handle is coupled to the body proximate the front end and a second handle is coupled to the body proximate the body back end. A cutting assembly is operatively connected to the body and comprises: (i) a cutter having a cutting edge and a cutter holder for securing the cutter to the body in a position where the cutting edge is parallel to a plane that encompasses the longitudinal axis.

Abstract: A cut-length indicating device for a hand power tool includes at least one guide unit configured to moveably guide at least one movably mounted and electrically operated indicating element. The device also includes at least one electric power supply unit configured to supply electric current to the at least one indicating element. The at least one guide unit and the at least one electric power supply unit are configured so as to be partially integral with each other.

Abstract: A skinning knife includes a handle, a blade carrier coupled to the handle, the blade carrier including a mount having a mounting surface, a boss extending outward from the mounting surface, and a spring including a front portion, a middle portion, and a rear portion, the front portion secured to the mount, the middle portion bent outward from the front portion and the rear portion, and the rear portion including a free end of the spring movable relative to the mount, and a blade including a sharpened edge, a body, and a slot formed through the body, the slot includes a narrow portion and a wide portion, the narrow portion includes the front end of the slot and the wide portion includes the rear end of the slot. The blade is releaseably secured to the blade carrier by interaction between the boss and the spring of the blade carrier and the slot of the blade.

Abstract: In a utility knife, having a handle, a blade, and a guard that prevents the user's fingers from being lacerated or abraded, a flexible strap with a stud that snap-fits into a socket in the guard is used to secure the guard to the handle. The stud fits into a recess in the handle to limit or prevent longitudinal movement of the guard relative to the knife handle.

Abstract: A hair cutting device (10) comprises a blade portion (12) and an adjustable cutting guide (16) moveable with respect to the blade portion to provide a reference guide line (19) on a user's skin/body to enable hair to be cut accurately at a predetermined angle or pattern.

Abstract: The utility knife blade is a blade for a utility knife having a slot formed in the blade that is especially useful when scoring drywall. The slot may engage a tape measure adjacent the tape hook so that the cutting edge at the scoring tip of the blade extends below the tape measure hook to engage the sheet of drywall. The slot extends through the cutting edge into the body of the blade at a slight angle relative to normal, preferably about 10°. The blade has a slot at each end so that the blade may be reversed when one end is dulled or broken. The blade has an otherwise standard configuration, typically having a trapezoidal body with a cutting edge extending along the longer parallel edge and a pair of notches in the shorter parallel edge for engaging knife holder retainer pins in the slidable utility knife holder carriage.

Abstract: A grooving sled for use with a pre-formed groove blade and hot knife, for making grooves in expanded polystyrene foam boards or walls. The grooving sled includes a built-in straight edge guide, one of two cutting position margins, and a stabilizer plate that fits inside a freshly-cut groove to keep the grooving sled straight while operating along the cutting layout line established on the board or wall. The stabilizer plate aligns with the groove blade by use of an angular adjuster, and if necessary, an insert bar. The stabilizer plate can also be adjusted vertically.

Abstract: A fastening apparatus for a limit stop element of an electric hand tool, in particular a hand circular saw, is disclosed. The fastening apparatus includes a guide, into which the limit stop element can be inserted and along which it can be displaced, and a locking mechanism, which can lock the limit stop element in the displacement direction. The locking mechanism has a spring element, which, in its locked position, clamps the limit stop element with a clamping force directed against the limit stop element and, in a released position, permits a displacement of the limit stop element.

Abstract: The present invention provides a method and apparatus of reducing current requirements by increasing resistance of the blade structure by reducing the cross sectional area of at least one section of the blade so that the electrical current requirements for heating of the blade to cutting temperature are reduced wherein the power supply and substantially entire unit may be mounted within a hand held unit. Methods of shaping blades to perform various heat distributions for specialty blades for custom cutting are disclosed. Further, an improved blade mounting structure is provided which includes structure for maintaining the legs of the blade parallel to the direction of cut and provides for easy insertion of new blades by maintaining a slotted blade cradle stable and in alignment with the blades and a clamp member away from the blade when the clamp mounting structure is loosened.

Abstract: A tile rebate cutting apparatus has a guide member, which may be formed by a spirit level, forming a linear guide for a rebate cutting tool, the rebate cutting tool incorporating at least one cutting device, the rebate cutting tool being adapted to engage with said guide member to move along a predetermined line determined by the position of the guide member to enable a cut for a rebate to be made in a ceiling tile.

Abstract: A hand held cutting tool for cutting vinyl flooring material. The cutting tool has a tool body with a bottom surface configured to slide across the vinyl flooring material as it is being cut. The tool body holds a hook blade above the floor level, and angling slightly outward toward the wall, roughly pointing towards the intersection between the floor and the wall. The tool body is beveled underneath the hook blade to provide a space for the vinyl to curve up against the wall. The vinyl is placed on the floor, curving up against the wall with the cutting tool body pressing the excess vinyl against the wall as the hook blade slices through the vinyl.

Abstract: A circular saw includes a base plate, a saw blade assembly pivotably mounted to the base plate, and a bevel adjustment assembly operable to adjust the bevel angle of the saw blade assembly by rotation of an axle supported on the base plate. A release mechanism includes two torsion springs each having a coil portion wound around the axle, an anchor leg held in a substantially fixed position relative to the axle and a release leg arranged to move relative to the axle. A manually operable release element is configured to substantially simultaneously move the release leg of each of the torsion springs in a direction to unwind the coil portion of each spring from about the axle.

Abstract: A cutting assembly is slidably mounted on a T-Square. The T-Square may include a scale having multiple indicia for measured cutting based on the size of the wallboard sheet being cut. The cutting assembly is mounted on a slider which may be clamped at measured positions along the arm of the T-Square. The cutting assembly includes oppositely disposed knife blades which are slidably mounted in a housing and spring loaded on opposite sides of a pivot mount such that when not in use the cutting assembly is urged to level and rests with the two knife blades retracted. As the housing is rotated so as to lower one end, the corresponding knife blade extends from the housing to engage with and score or cut the surface of the wallboard material. The cutting tool may be rotated in the opposite direction to thereby extend from the housing the other blade of the pair of oppositely disposed knife blades.

Abstract: The present invention relates to a motorized beard trimmer comprising a cutting unit with a cutting mechanism defining a cutting line and a comb defining a support point, said cutting unit being mounted so as to tilt on a handle, wherein the tilting axis of the cutting unit, the cutting line and the support point of the comb are globally aligned or superimposed, allowing said cutting unit to be automatically positioned tangentially to the shape of the face during trimming of the beard.

Abstract: A rolling utility knife is disclosed. The rolling utility knife includes a pair of frame rails and at least one cross-member connecting the pair of frame rails. In addition, the rolling utility knife includes a front roller and a rear roller disposed between the frame rails. A circular blade is adapted to rotate along an outside edge of a first rail of the pair of frame rails. The rolling utility knife further includes a lever secured to an inside edge of the first rail by a fulcrum, where the circular blade secured to a first end of the lever and the blade is adjustable to move vertically relative to the first rail. A pin is disposed at a second end of the lever, where the pin is configured to cause the circular blade to move downward when the rolling utility knife is placed on a planar surface.

Abstract: A pen-shaped cutting apparatus and a method for its use is disclosed. The cutting apparatus has a body and a cutter head pivotally mounted thereto. The cutter head includes a swivel-mounted cutter housing that includes a cutter protruding slightly from a lower surface of the cutter housing. The cutting apparatus enables continuous non-linear cutting of an underlying surface.

Abstract: To allow trimming body hair by pulling as well as pushing with the same hair trimmer device (1), its comb unit (6) is positioned over the trimming head (16) in at least two different positions (8, 9), one (8) pulling and one pushing position (9). In particular, in the different comb positions (8, 9), the tips (20) of the comb unit's fins (13) point in the direction of the respective movement. Preferably, the comb unit (6) is removably attached. In a preferred embodiment, the trimming head (16) includes shaving means (18) besides trimming means (19).

Abstract: A specimen slicing guide for use in slicing a biopsy specimen taken from a human patient or an animal patient includes a base extending in a longitudinal direction. A plurality of needles extends substantially perpendicularly to the base and the needles are spaced along the longitudinal direction of the base. Two specimen slicing guides are coupled via at least one link, which is adapted to allow an adjustable spacing of the two specimen slicing guides in a parallel relationship. A method of cutting a biopsy specimen includes fixing the biopsy specimen relative to a support surface using the needles of two, parallel-arranged specimen slicing guides, inserting a cutting tool between corresponding needle gap pairs and then downwardly moving the cutting tool under guidance of adjacent needles.

Abstract: A cutting assembly is slidably mounted on a T-Square. The T-Square may include a scale having multiple indicia for measured cutting based on the size of the wallboard sheet being cut. The cutting assembly is mounted on a slider which may be clamped at measured positions along the arm of the T-Square. The cutting assembly includes oppositely disposed knife blades which are slidably mounted in a housing and spring loaded on opposite sides of a pivot mount such that when not in use the cutting assembly is urged to level and rests with the two knife blades retracted. As the housing is rotated so as to lower one end, the corresponding knife blade extends from the housing to engage with and score or cut the surface of the wallboard material. The cutting tool may be rotated in the opposite direction to thereby extend from the housing the other blade of the pair of oppositely disposed knife blades.

Abstract: A utility knife with a replaceable circular blade mounted to rotate on the end of the handle. The upper half of the blade is shrouded by the end of the handle, and freely rotates therein. A spacer with a roller end is mounted to be adjusted toward and away from a workpiece to adjust and control the blade's depth of cut. The handle includes a storage compartment for spare blades and has a pivoting cover. For use as a drywall knife, the blade has a continuous edge and a thicker central body that presents discontinuous “points” or edge bodies to the workpiece along the sides of a the cut made by the continuous edge, designed to push apart the paper cover or sheath on the drywall as it makes a cut, and to keep the blade rolling freely as it makes a cut. A tape measure can optionally be incorporated into a rounded handle portion.

Abstract: A universal tape and drywall scoring apparatus for use with a tape measure that includes a tape measure encasement for encasing a portion of the tape measure housing, a clip assembly connected to the distal end of the measuring tape, the clip assembly comprising a hollow housing having a top wall provided with a slot and a pair of spaced apart side walls each having a cavity formed therein, and a cutting assembly connected to the clip assembly, the cutting assembly comprising a scoring blade receivable within the slot in the top wall of the hollow housing of the clip assembly and a pair of spaced apart connector clips having end portions receivable the cavities formed in the side walls of the clip assembly.

Abstract: A food slicer having a blade is disclosed having a runway for supporting food prior to cutting by the blade and a landing for supporting the blade and the food after being cut. The runway and landing are adjustable for selecting a thickness of a food slice. The runway and landing are simultaneously adjusted, by a single mechanism, so that the blade and runway are maintained generally parallel with respect to each other. The adjusting mechanism includes a plurality of rotatable cam portions that engage with respective portions on the runway and landing so that each of the runway and landing may be oppositely pivoted around an end to maintain the parallel relationship. The food slicer also includes on-board storage for inserts, such as julienning or cubing inserts. The storage is located on a bottom of the runway, which is pivoted upward for storage.

Abstract: A footplate for a power tool for guiding the tool along a guide, the footplate having on its lower surface at least one dual-restriction , wherein the first part of the dual-restriction is for engaging a rail extending in a longitudinal direction of a first guide on the upper surface of said first guide and the second part of the dual-restriction is for engaging a rail extending in a longitudinal direction of a second different guide on the upper surface of said second guide, where the first and second parts of the or each dual-restriction each has a fixed side wall, and where the first and second parts of the or each dual-restriction have an adjustable side wall arranged opposite to a respective fixed side wall.

Abstract: The present invention relates to a device for easily and accurately marking, scoring and cutting drywall sheet material, the device having a general appearance of a T-square and comprising gripping pins for securely holding the T-square on the sheet material to be marked, scored or cut.

Abstract: A tile rebate cutting apparatus has a guide member, which may be formed by a spirit level, forming a linear guide for a rebate cutting tool, the rebate cutting tool incorporating at least one cutting device, the rebate cutting tool being adapted to engage with said guide member to move along a predetermined line determined by the position of the guide member to enable a cut for a rebate to be made in a ceiling tile.

Abstract: A carpet trimmer including a base, a pair of posts mounted on said base and a handle mounted on said base. A number of spacers are inserted over the posts and secured by fasteners. A blade holder holding a pair of blades and including a blade holding face and a wall runner is inserted between two of the spacers, such that the posts fit into groove on the blade holding face. Throat adjustment holes on said spacers receive dimples on the blade holder to allow throat adjustment.

Abstract: A skinning knife comprising a handle, a convex skinning blade, and one or more spreading members disposed at the forward most position of the knife so as to spread apart two portions of an animal hide that have been separated as the knife is thrust forwardly. A preferred embodiment also features a slitting blade disposed at a forward portion of the handle and having an upwardly- and forwardly-directed cutting edge, and a retractable punch blade disposed in the handle beneath the slitting blade for opening a hole in the hide when the knife is thrust forwardly, the first spreading member having a slot therein for receiving the punch blade. A blade actuation mechanism is provided for selectively moving the punch blade forwardly and rearwardly through the slot in the first spreading member. In alternative embodiments, an actuation mechanism moves the skinning blade or the spreading member.

Abstract: The invention relates to an arrangement for retro-actively cutting wiper blades, comprising a first guiding element (D) which engages in grooves which are arranged on both sides of the wiper blades, and a second guiding element (L) which is arranged in close proximity to the edge of the lip (M) of the wiper blade which is to be retro-actively cut. A blade (J) is arranged in close proximity to the second guiding element (L). The second guiding element (L) has a fixed width such that the lip (M) of the wiper blade is guided in a smooth-running manner.

Abstract: A supporting device is adapted for mounting a protective cover to shield a cutting blade of a cutting machine, and includes a tightening bolt fastened to a tightening surface of a mount member, a supporting frame adapted for holding the protective cover and having a guiding slot for passage of the bolt so as to be movable between a position of use and a retreat position, a movable tightening member sleeved on the bolt and having a biasing-force acquiring major wall, and an actuating member having an actuating body which is threadedly engaged with the bolt such that turning of the actuating body results in axial displacement of the actuating body to press or release the tightening member so as to tighten or loosen the supporting frame.

Abstract: A drywall cutting apparatus is provided having a slidable mount with a top surface and a bottom surface. A channel is integrated into the bottom surface and utilized for a slidable engagement. The apparatus also includes a body having at least one side surface. The body is mounted on the top surface of the slidable mount. The apparatus further includes at least one cutting wheel mounted on the at least one side surface of the body. The at least one cutting wheel is a wheel-shaped blade that cuts as the apparatus is moved across a surface.

Abstract: The invention concerns a bladed scraper having a blade head which includes a blade receiving means for a blade (K) for cutting an item to be cut in a cutting direction (s), wherein the blade receiving means has a working side from which the blade projects out of the blade receiving means in a working position with a working cutting edge (S) which comes into use. To make working with the bladed scraper safer it is proposed that the bladed scraper has a guide for limiting a cutting movement or cutting region (B) of the bladed scraper and/or for positioning the blade head at an attack angle (?) or in an attack angle range and that the guide is connected to the bladed scraper.

Abstract: A carbide utility score tool has a carbide scoring blade as a primary cutting blade. The blade of the tool also has an edge file or saw and a flat file and the end of the tool handle has a striking cap for setting nails or the like.

Abstract: A power tool is provided with a perforated material remover to remove perforated material from power tool cutting implements. The power tool also includes a rip guide which has a long guide edge and two attachment points to the shoe/base of the saw. The rip guide is attached to the base/shoe via a pair of L-shaped openings that accept L-shaped support arms of the rip guide. The rip guide can also be folded for compact storage. The power tool also includes dual bevel scales for quickly and easily setting the bevel angle on the power tool.

Abstract: A surgical tool includes a surgical blade configured to be moved to form an incision. The surgical tool also includes a wire configured to cause movement of the surgical blade. The surgical tool further includes an actuator configured to shorten a length of the wire to cause the movement of the surgical blade. The surgical tool could be configured to move the surgical blade in a first direction and then in a second direction in response to a single shortening of the wire. Also, the wire could represent a first wire, the surgical tool could include a second wire, and the surgical tool could be configured to move the surgical blade in a first direction in response to shortening the first wire and to move the surgical blade in a second direction in response to shortening the second wire.

Abstract: A cutting apparatus includes a blade, a jaw pivotally connected to the blade, an anvil secured to the jaw, an angle-adjusting element pivotally connected to the anvil and at least one positioning device provided on the indicator. The anvil includes marks for indicating different angles at which a piece of work is to be cut by the blade and cutouts in the edge corresponding to the marks. The angle-adjusting element includes at least one indicator for pointing at one of the marks of the anvil. The positioning device is movable between a locking position in a selected one of the cutouts for locking the angle-adjusting element to the anvil and an unlocking position away from the cutouts for allowing the pivoting of the angle-adjusting element on the anvil.