Abstract: Systems, devices and methods for constructing a quilt from a plurality of quilt blocks are described herein. The devices include a flat body having a front planar surface and a rear planar surface that contacts a fabric when in use, the flat body including: a back/sash template for measuring and cutting a back piece of each quilt block; and a centering guide for indicating where quilt blocks in different rows of the quilt will align.

Abstract: The present disclosure relates to a drawing device for creating a pattern, wherein the drawing device comprises a gear assembly that rotates upon movement of the device, the gear assembly being operatively coupled to a cam and a cam follower, such that rotation of the gear assembly rotates the cam and causes the cam to bear against the cam follower. Movement of the cam follower thereby causes lateral movement of a marker carriage housing at least one writing instrument.

Abstract: A tile square includes a right isosceles triangular substantially rigid transparent sheet with ruler indicia adjacent to the hypotenuse and one of the equal sides. A fence is provided along the other equal side. A plurality of templates are formed in the sheet between the sides and hypotenuse. The templates include a plurality of holes for a range of pipe sizes and a series of arcs defining peripheral boundaries of a closet or toilet flange. The equal sides of the tool are at least 18 inches in length.

Abstract: A portion of a street surface to be removed for access to a manhole cover is defined by placing a design mask on the street with a cutout overlying an electronic marker embedded in the street proximate the manhole. The design mask is oriented such that a larger cutout overlies the manhole cover, by aligning the design mask along an established direction. The design mask can be a template with a circular cutout, or a stencil with a ring cutout. When the marker is located proximate a curb line, the established direction may correspond to a normal from the curb line. A rectangular design mask can be oriented by keeping an edge of the design mask which is closest to a curb line parallel with the curb line. Alternatively, a compass heading may be used, and a pointer feature of the design mask can be aligned with the compass heading.

Abstract: Embodiments of the present invention include a calibration and measurement system designed primarily for use in the rapid evaluation and characterization of open or visible wounds in patients. The invention in a preferred embodiment comprises a set of colored concentric rings, typically constructed of paper or synthetic paper. The practitioner removes only as many rings, from the center outward, until the entire wound is visible within the open aperture at the center of the remaining rings. The area dimensions of the wound are then read out from the size of the inner remaining ring. Photography optionally records the wound appearance and size. A related system is developed for linear dimensioning of wounds. This embodiment is also designed to standardize the color scheme for accurate photography wound description. The color scheme is also applicable to a linear device to accurately describe wound size. Embodiments of the invention are also useful in forensic and accident investigations.

Abstract: The embodiments of the present invention provide a wide variety of integrated and compact templates of the parallel lines and multi-radius curves drawing for cloth stitching. The integrated templates provide the convenience for the drawing of those parallel curves, lines, and angles focused on the same central point. The integrated templates can be designed with a wide variety of shapes consisting of many sub-shapes with different distances from the central point or the common reference point, and be manufactured by the injection molded transparent plastic in the compact and solid one-body format without any mechanical connection.

Abstract: The present disclosure is directed to a device and method for guiding a hopping foot across material in a desired pattern using a manually positionable longarm sewing machine, the device having a rigid guide arm with opposing first and second planar sides, a plurality of notches formed in the edges of the guide arm, and at least one attachment point for mounting on the material. The attachment point can be a circular opening, and an anchor point in the form of a temporary disc affixed to the material is sized and shaped to be slidably received within the circular opening to provide a pivot point for rotation of the guide arm, and the notches are sized and shaped to slidably receive the hopping foot of the longarm sewing machine to guide the hopping foot across the surface of the material.

Abstract: A drawing template set includes a planar anchor ring having an outer diameter and an inner diameter, a rotary increment scale marked at least part way along the outer diameter, and a first registration interface at at least one point on the inner diameter, and a planar template having an outer diameter providing a slip fit into the inner diameter of the planar anchor ring, one or more through slots or other openings enabling a user to draw specific lines and shapes on a drawing surface to which the template may be applied, and a second registration interface on the outer diameter matching the first registration interface of the planar anchor ring, enabling the user place the planar template in the anchor ring for use, to remove it as desired, and to replace it with a different template fashioned for a different purpose.

Abstract: An industrial robot system has at least one robot (1) having a robot coordinate system (xr1, yr1, zr1) and a positioner (2) having a positioner coordinate system (xp, yp, zp) and adapted to hold and change orientation of a workpiece by rotating about a rotational axis. Target points for the robot are programmed with respect to an object coordinate system (xo1, yo1, zo1). A robot controller (3), at least three calibration objects (24a-c) arranged on the positioner, and a calibration tool (26) held by the robot are provided. The positions of the calibration objects are determined for at least three different angles of the rotational axis of the positioner, to determine the direction of the rotational axis of the positioner and relation between the object coordinate system and the positioner coordinate system by performing a best fit between known and determined positions of the calibration objects.

Abstract: A decoration-making assist tool includes a first and a second plates. Each plate includes a straight base edge and a peripheral edge connected to the ends of the base edge. A connecting portion pivotally connects the two plates to each other so that they can be folded to overlap each other. The first plate includes recesses formed at the peripheral edge and N elongated holes. The second plate includes (N+1) elongated holes. The ends of these elongated holes are adjacent to the peripheral edges of the plates. When the two plates overlap each other, the recesses and the ends of the elongated holes of the first plate communicate with corresponding ends of the elongated holes of the second plate.

Abstract: The golf ball liner includes a fixing member having a predetermined shape to house a golf ball, and including fixing pads disposed at both ends of the fixing member to hold the golf ball not to move, a rotating member having a shape identical to that of the fixing member and a diameter smaller than that of the fixing member, and including both ends rotatably supported by the respective ends of the fixing member, and at least one pen disposed at an inner side of the rotating member to contact the golf ball for drawing a line on a surface of the golf ball along a circumference of the golf ball when the rotating member rotates around the golf ball.

Abstract: A plurality of templates include cutting and sewing lines for forming a plurality of various pieces of two coordinating fabrics for use in quilt making. The template is made of a relatively rigid sheet of transparent or semi-transparent material such as acrylic. The cutting and sewing lines are formed by a plurality of spaced openings extending through the sheet material.

Abstract: A device for guiding a tool to create a hole in a door panel. In one aspect, the invention can be an apparatus for guiding a tool to create a hole having a predetermined shape and size in a door panel, the apparatus comprising: an elongate member extending from a first end to a second end along a longitudinal axis, a bracket at the first end of the elongate member for engaging a top edge of the door panel; a template comprising a template section and a mounting section, the template section comprising a central opening defined by an inner edge, the central opening having the predetermined shape and size, the mounting section slidably mounted to the elongate member so that the template can be slid along the longitudinal axis of the elongate member; and a locking means for securing a position of the template on the elongate member.

Abstract: A combined template and ruler for use in quilting is formed from a rigid plastic material and includes a plurality of spaced slots that correspond to cutting and sewing lines that are marked on layers of fabric using the template. The cutting and sewing lines are positioned such that a plurality of half square triangles of two ply material are formed without cutting the thread. A template and method of forming snowball blocks in a similar fashion is also disclosed.

Abstract: A method of installing temporary construction elements for an event without damaging a floor is disclosed. The method includes creating a digital file of an architectural template illustrating the construction elements. The method further includes printing the digital file as a full-scale architectural template. The full-scale architectural template comprises one or more sheets capable of protecting the floor during installation of the temporary construction elements, each sheet being a portion of the full-scale template. The method further includes placing and aligning the sheets on the floor so that the markings are positioned in the same location as the corresponding temporary construction elements should be and attaching the sheets to the floor. The method further includes installing the temporary construction elements on the sheets in accordance with the markings. The method further includes removing the sheets after installation of the construction elements.

Abstract: The present invention is a calibration and measurement system designed primarily for use in the rapid evaluation and characterization of open or visible wounds in patients. The invention in a preferred embodiment comprises a set of colored concentric rings, constructed of paper or synthetic material. The practitioner removes only as many rings, from the center outward, until the entire wound is visible within the open aperture at the center of the remaining rings. The area dimensions of the wound are then read out from the size of the inner remaining ring. Photography optionally records the wound appearance and size. A related system is developed for linear dimensioning of wounds. This invention is also designed to standardize the color scheme for accurate photography wound description. This color scheme is also applicable to a linear device to accurately describe wound size. The invention is also useful in forensic and accident investigations.

Abstract: A handicraft needle punch set includes a needle puncher, and an assisting tool used in performing needle punching to an object. The assisting tool includes a plurality of tubular template portions each having a desired sectional shape. The needle puncher includes a plurality of needles, a grip member supporting the needles in a manner allowing the tips of the needles to protrude to the outside, and a tubular attachment member detachably attached to the grip member. The tubular attachment member is configured to surround the needles in a noncontact manner and have a contact end portion coming into contact with the upper portions of the tubular template portions.

Abstract: A method is described using paired templates for simplifying the design and construction of a hexagon based quilt top. This method overcomes the inherent difficulty in traditional hexagon quilting. In order to sew individual hexagons together and have them lie in a plane, the seam that connects each edge must stop short of running the entire length of that edge by the width of the seam on the adjacent edge at each end. A method is described that allows for continuous stitch lines without having to precisely start and stop stitching. It employs a shape within a shape concept, allowing a hexagon to fit inside a triangle which lends itself to sewing together using easier stitching techniques. The hexagon is sized to precisely fit inside an equilateral triangle and the tips of the triangles that fall outside of the hexagon shape, themselves come together to form a hexagon when the triangles are joined together.

Abstract: A plurality of interchangeable straight and curved short cylindrical module segments are selectively and releasably joined together end-to-end manually and rotated relative to one another to form full-scale three-dimensional models of desired complex shapes of tubing, pipe, and conduit configurations. The segments are provided in sets having outside diameters corresponding to the outside diameters of conventional tubing, pipe or conduit and have a circumferential scale at each end to visually determine the relative rotation between one segment and an adjoined segment. When assembled, the model provides accurate shapes and dimensions to aid in designing, laying out, cutting, and fabricating tubular members, and for forming tubular configurations from pre-bent metal tubular sections and the proper relative rotation between them.

Abstract: A template for assisting a person with drawing and cutting two-dimensional shapes is disclosed. In one embodiment the template is a substantially planar member spaced apart surfaces. The template is formed in a selected shape having a handle disposed on one surface and a skid-resistant member disposed on an opposite surface. The handle and the skid-resistant member facilitate holding the template stationary in respect of a writing surface while tracing the shape of the template. In another embodiment the template includes two members formed in substantially matching shapes. A plurality of magnets is employed to secure the two members in substantial alignment having a material disposed therebetween. The outer edges of the two members provide a guide for cutting a piece of the material in a shape conforming to the shape of the template.

Abstract: A quilting template system and a method for selecting a template to facilitate quilting a border-like area of a craft-work with length-sides and width-sides meeting at corners. The template system includes a set of templates each having an edge of repeated patterns of equal pattern-length but differing in pattern-length from template to template, and a correlator indicating which template(s) of the set are usable for the craft-work without fractional-pattern use on either the length-sides or the width-sides thereof. The method includes a sequence of steps for selecting a template by using the correlator to indicate which templates are usable for quilting the entire border-like area without fractional-pattern use. The system preferably includes groups of templates, templates of each group each having patterns of equal pattern-length but differing in pattern-shapes from template to template within the group.

Abstract: An exhaust header modeling apparatus includes a plurality of interchangeable straight and curved short cylindrical segment members which are selectively and releasably joined together end-to-end manually and rotated relative to one another to form a full-scale three-dimensional model of a desired engine exhaust header design or configuration. The segments are provided in sets having outside diameters corresponding to the outside diameters of conventional exhaust header tubing and have a circumferential scale at each end to visually determine the relative rotation between one segment and an adjoined segment. When assembled, the model provides optimum header layout and pathways to accurately fit within an available space, and provides accurate dimensions to aid in cutting forming sections of the exhaust headers from pre-bent metal tubing sections and the proper relative rotation between them.

Abstract: Quilt swag decoration template set (10) includes adjustable tracing pattern template (15) for creating a shape of predetermined length for marking and cutting out swag pieces (120) and adjustable placement template (45) for marking the location for placing each swag piece (120) to create a swag decoration (119) on border (115) of a quilt (110).

Abstract: A stencil assembly for applying a stenciled design or message on a surface includes: (a) a reusable stencil base framing an elongated opening straddled by two opposite, spaced-apart interior long edges; the stencil base further including at least one exterior long edge parallel to the interior long edge, and a number of female stencil base cut-outs along the long edges; and (b) a number of stencil pieces of sufficient size for close insertion in the opening; the stencil pieces being formed of a common material and generally having a common length; the stencil pieces being interchangeably arrangeable in the opening between the interior long edges; a majority of the stencil pieces each including an individual character cut-out for receiving a stenciling material; the stencil pieces further including at least one male stencil piece projection on at least one of its sides, the male stencil piece projection being insertable in at least one of the female stencil base cut-outs. A stencil kit is also included herein.

Abstract: A stenciling assembly for connecting and interlocking stencil members together end-to-end. The stenciling assembly includes one or more stencil members each including a piece of material having a distinctive pattern and being used to transpose the pattern onto other objects; and also includes one or more first connector members each being attached to a first end of a respective stencil member for connecting the stencil member to other stencil members; and further includes one or more second connector members being attached to a second end of a respective stencil member for connecting the stencil member to other stencil members.

Abstract: A method of determining the throat area between adjacent airfoils in a nozzle set among a plurality of nozzle sets of a machine involves providing a plurality of inspection points on a suction side of a first airfoil and a pressure side of a second airfoil, the second airfoil being adjacent to the first airfoil. A plurality of inspection points are provided on each of an outer sidewall and an inner sidewall, respectively, of the nozzle set. Positions of each of the first and the second airfoils, and the outer and inner sidewalls are determined by measuring the positions of the inspection points. The measured positions of each of the first and second airfoils, and the outer sidewall and the inner sidewall are compared with corresponding predetermined values.

Abstract: Apparatus is disclosed in which a flat, transparent, plastic template bears a combination of inscribed marks and apertures to cooperate with each other so as to enable a user to readily draw two-dimensional depictions of circular and linear plasmid deoxyribonucleic acid (DNA). The template further cooperates with additional apertures for the forming of indicators and markings commonly incorporated in drawings of plasmid DNA.

Abstract: A set of human torso manikins for use in fabrication and evaluation of body wear for a group of human beings, the torso manikins being shaped and dimensioned to conform to selected parameters derived from statistical analysis of the group. The manikins include a central human torso manikin of a shape corresponding to a multivariate center of anthropometric distributions of selected members of the group, and a plurality of extreme human torso form manikins each of a shape corresponding to a multivariate extreme suitable for accommodation of 90% of the group. About half of the plurality of extreme human torso form manikins exhibits a dimensional specification substantially less than a corresponding specification of the central human torso manikin and about another half of the plurality of extreme human torso form manikins exhibits a dimensional specification substantially greater than the corresponding specification of the central human torso manikin.

Abstract: A device for forming straight and curved score lines in sheet material. The device has a scoring plate with a top surface with a number of spaced apart curved grooves formed on the top surface thereof. Each of the spaced apart scoring grooves has different radii of curvature. An optional overlay template portion has a number of spaced apart curved slots formed therein. The overlay template portion is adapted to overlay the scoring plate such that the spaced apart curved slots align with the grooves on the scoring plate when placed thereon. A scoring tool with a tip sized to fit into the grooves in the scoring plate and the slots in the optional template overlay portion is provided for scoring the sheet material.

Abstract: A set of two templates for use in cutting patches, each patch having first and second straight sides that in general are not parallel, whereby the patches can be arranged in a sequence with the first straight side of each patch except the first patch collinear with the second straight side of the previous patch, and with the second straight side of each patch except the last patch collinear with the first straight side of the next patch. The shape of the first template is the shape of the sequence of patches. The second template includes a sheet of a transparent material having a straight edge and bearing markings showing the successive patches in the sequence arranged along the straight edge and oriented so that the second straight side of each patch, except the last patch, is collinear with the straight edge.

Abstract: A transparent flat sheet template facilitates joining and cutting of pieces of fabric used to make conventional quilting units, prior to assembly of the units into in a quilt. The template comprises a first edge having a first straight edge portion and a concave edge portion, the concave edge portion being a portion of a circle. The template has second and third straight edges disposed perpendicularly to each other, and a fourth edge disposed parallel to the second edge. The template also includes an arcuate guideline which is generally similar in size and shape to the concave edge portion, and a grid of first and second sets of straight guidelines marked on the template. The first set of guidelines are parallel to each other and to the first straight edge portion of the template. The second set of guidelines are parallel to each other and to the second edge of the template. The straight guidelines are used to align the template with edges of a square of fabric.

Abstract: A gauge for preparing drawings and/or other characters which are observed in such a way to achieve a virtual deepness effect, and a method for using the gauge in which that gauge has a base part (1) of with stencil type cutouts of letters (2) and/or graphic elements (3) and/or semi or totally pre-formed drawings (4), to serve as patterns for the drawing reproduction on a determined surface, and the base part has a scale with markings at progressively closer distance intervals (m). The gauge is positioned on a drawing surface, a figure is drawn through a cutout at a marked point on the surface, the gauge is moved to the marked point, the figure is redrawn and a point of smaller distance is marked. The redrawing is continued as many times as desired.

Abstract: A device for properly aligning and registering a display panel onto an adhesive backing panel to create a display article is provided, as well as a method and kit for such registration. The alignment device comprises a base having two wall portions which define an area within the base that is geometrically congruent to the display and backing panels. The wall portions are skewed with respect to one another, defining limit stops against which the display and backing panels can be placed to inhibit their movement and enable proper registration. The alignment device is preferably made out of a unitary construction of plastic, with the base having an arcuate cut-out along its perimeter. A method for registering the display panel on the backing to create a display article provides for proper placement of the panels into the alignment device. A kit includes a plurality of backing panels with adhesive layers, and an alignment device.

Abstract: The present invention relates to a machine for forming grooves of uniform configuration in a face surface of a one-piece frame such that the adjacent grooves meet at inside corners to define miter lines. This machine comprises a support means adapted to securely support a side of the frame under a predetermined angle with relation to the horizontal plane, a cutter assembly having a cutter means, a first guiding means adapted to guide the cutter means along the respective miter line in order to cut the inside corner and the miter line, and a second guiding means adapted to guide the cutter means along the side of the frame to cut a side groove portion extending between the opposite miter lines on the side of the panel. The frame is extended from the support means outwardly upwardly, and the first guiding means further comprises a stop means adapted to restrict the movement of the cutter means beyond the area designated for formation of the respective inside corner defined by the corresponding miter lines.

Abstract: A mini-drafting machine that is structured so that it can be guided horizontally and vertically along a flat surface, such as a piece of paper. Horizontal, vertical and diagonal lines, as well as different sized arcs and circles, can be drawn upon the flat surface. Different sized geometric shapes can also be made upon the flat surface with built-in templates. The lengths of the vertical, horizontal and diagonal lines can be measured, while the angle of the diagonal lines can be determined.

Abstract: An improved drafting instrument is provided and consists of a base board and a slide member. The instrument is so constructed that various geometrical figures, such as squares, rectangles, right-angled isosceles triangles and regular triangles, are accurately drafted in the various dimensions between a minimum and maximum dimension without using conventional frame rules. The base board is provided with one or more openings, and guide rails along which the slide member is slid and positioned for drawing. By displacing the slide member along one of the guide rails and positioning against the guide rail, a figure having a desired dimension is formed and drafted.

Abstract: A device for defining the profile of a basketball foul lane and key on a surface such as asphalt or concrete. The device is comprised of a plurality of panels wherein each panel has opposing side walls which define a section of the profile therebetween. Connecting ribs are disposed between the side walls for the purpose of connecting the side walls. The plurality of panels is arrangeable so that the sections of the profile align to form the profile of a basketball foul lane and key. The device may be conveniently supplied and sold as an apparatus which includes the device, tape to temporarily attach the device to the solid surface, paint to paint the profile exposed on the surface by the device and a plumb bob to properly align the device on the surface.

Abstract: A folding drafting aid apparatus includes a planar member having a first and second planar member ends and a first planar member side and a second planar member side, and being foldable at a hinge structure so that the second planar member side pivots face to face against itself; a flexible, resilient first tab having a free end and retained on a first tab structure; and a flexible, resilient second tab having a tab free end and retained on a second tab structure; where the tabs are positioned relative to each other so that when the planar member is folded at the hinge structure to pivot the second planar member side face to face against itself, one tab overlays the other tab and so that pressing one tab against the other tab causes both tabs to bend until the free end of the one tab crosses over the free end of the other tab and remains in this crossed-over position to hold the planar member in the folded position.

Abstract: A set of thin, flat stencil plates are stacked together face-to-face to form a three-dimensional article shaped as a decorative article. The stencil plates are held together in the three-dimensional form by a connecting member or by frictionally interlocking them to one another. The stencil plates each contain one or more apertures of unique shapes, so the plates can be disassembled from the three-dimensional form and used individually as separate stencils. The stencil plates have peripheral outer surfaces which cooperate to form the three-dimensional shape of a selected design figure when the plates are assembled in a particular sequence, and the article, in its assembled form, conceals the stencils contained inside the finished three-dimensional article. The invention has use as a puzzle in stacking together the stencil plates in the proper sequence, and the finished article can be an art object or a toy, for example.

Abstract: A tool for drawing circumferences includes a main plate having at least one through opening and at least one disc plate located within the through opening of the main plate. Both plates are contained in a common plane. The disc plate is rotatable around an axis normal to the common plane, the axis passing by a geometrical center of the disc plate. The disc plate has a plurality of through orifices located at different distances from the geometrical center of the disc plate, each orifice forming a pass for a drawing device. The through opening of the main plate defines an inner edge of the main plate, the inner edge having a locking device for interengaging a peripheral groove formed in an outer peripheral edge of the disc plate. The locking device includes at least one radially resilient tongue formed in the plate by at least one cut transversely extending to the inner edge of the main plate so that the tongue elastically yields along a substantially radial direction.

Abstract: A rotative drawing template, used to draw various sizes of circles. The template is circular in configuration and is held at its periphery by equally spaced balls running in between two bearing races; one located in the periphery of the template and the other race, located in the surrounding template support. This enables the template to freely rotate without lateral movements.

Abstract: A drafting tool for drawing a circle or curved arc has interlocked, independently rotatable concentric rings. The rings have radially extending openings that can be aligned to form a radial track. A carriage for carrying a pencil or other marking element is slidable along the track to a desired radial position. The carriage can occupy one or more than one of the rings and rotates with the ring(s) around a center point. The carriage has a locking structure that is spring biased to retract and advances to lock the carriage in position at the desired radius when the pencil or the like is inserted. The locking structure can have a tooth for engaging between teeth along the radial openings in the track, the teeth on the track forming part of the sliding support for the carriage. The rings have complementary tongues and grooves, and nodules on at least one of the abutting surfaces of the tongues and grooves minimizes surface contact to reduce friction.

Abstract: A device for making an arc of a predetermined radius at a square corner of a workpiece includes a positioning member having first and second edge members which are joined together at a right angle so that the positioning member may be seated against the square corner and an arc member extending across a portion of the right angle formed between the first and second edge members. The arc member is planar with the positioning member disposed on and extending from the arc member. The device may also include multiple positioning members and multiple arc members having different arc radii.

Abstract: A measuring instrument includes a casing served as a rule, an angular level secured in a central portion of the casing having a rotational protractor rotatably mounted in the level for measuring any angles, a horizontal gauge provided in a right side portion of the casing for checking a horizontality, a vertical gauge formed in a left side portion of the casing for checking a verticality, a reelable plummet provided in the casing and protruded outwardly for checking a vertical line or plane, a measuring tape wound in the casing and pulled outwardly for measuring a length, and a protractor template rotatably secured on the casing having a plurality of guide slots of many geometric shapes punched in the template for guiding the drawing of many geometric shapes and having a plurality of angular graduations circularly formed on a pivotal portion of the template also for measuring planar angles, so as to provide a measuring instrument having multiple measurement uses.

Abstract: A guide is disclosed, for the placement of images on non-flat objects and surfaces, useful in schools, business, industry and homes, of a moldable, shape-retaining material on which have been placed a plurality of holes defining a pattern, the material is fit against the non-flat object, marks are made through the holes of the sheet as a stencil directly onto the non-flat surface, after which the dots are connected to provide the pattern on the surface. Words, letters, faces, cartoons, any image, can be placed uniformly upon a number of such objects, which can be balloons, paper cups, pipes, walls, or any non-flat surface. The guide can be a foil, a sheet, a fabric, with or without supplemental shape-retainment structure or material content.

Abstract: A device (10) for use by artists, draftsmen and the like for aid in perspective viewing. The device comprises first (11) and second (12) framework units, which when moved with respect to one another form a variable dimension rectangular aperture to vary the field of view of the user.

Abstract: A stencil kit including a case, a drawing panel releasably mountable to said case in the manner of a cover, and multiple stencils selectively mounted to drawing surfaces formed on opposite faces of the drawing panel. The drawing panel includes an integral handle, which, upon a mounting of the drawing panel to the case, provides a handle for the entire kit. Interengaging lugs and a latch and keeper assembly provide for releasable joinder of the drawing panel to the case. Positioning flanges, projections and recesses about each drawing surface and on the associated stencils releasably position the stencils for use.

Abstract: A teaching kit organization includes a series of rigid planar stencils, including variously configured openings directed therethrough. Chalk application members are provided, including a chalk stick, an eraser, and an applicator bottle to direct chalk through the stencil openings to apply a predetermined configuration to a rearwardly positioned board to provide visual aid and assistance in positioning variously configured shapes upon a blackboard and the like for use as a teaching tool. The applicator bottle is formed as a resiliently deformable body directing a predetermined quantity of chalk dust through a forwardly positioned conduit, whereupon a surrounding perimeter of bristles positioned about the perimeter opening of the conduit and associated applicator slot formed within an applicator head of the bottle directs the chalk dust in a smooth continuous pattern therefrom.

Abstract: A template includes a reference panel for bringing the center of a figure to be drawn into exact alignment with the center of a previously drawn figure. The reference panel, when used in combination with a figure panel having figure holes, allows concentric figures to be drawn accurately.

Abstract: A drafting template which facilitates prealignment of multiple symbols onto vertical and horizontal axes. The distance between symbols is generallly determined by a predetermined scale which is associated with the template. A grid pattern and four double rows of holes around the edge of the grid are used to place template cutouts in the proper location on the drawing, so that the symbols are drawn in the proper location. Additionally, four apertures associated with each symbol define the vertical and horizontal axis of the symbol, and four indicia, associated with each symbol, define a predetermined rotation of the template required to draw a symbol at a predetermined angle.