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  2. Speed square - Wikipedia

    en.wikipedia.org/wiki/Speed_square

    A speed square, also called a rafter square, rafter angle square, and triangle square, is a multi-purpose triangular carpenters' tool used for marking out. Its functions encompass many of those offered by combination squares, try squares, and framing squares. Carpenters use it to make basic measurements and mark lines on dimensional lumber, and ...

  3. Set square - Wikipedia

    en.wikipedia.org/wiki/Set_square

    The simplest form of set square is a triangular piece of transparent plastic (or formerly of polished wood) with the centre removed. More commonly the set square bears the markings of a ruler and a half circle protractor. The outer edges are typically bevelled. These set squares come in two usual forms, both right triangles: one with 90-45-45 ...

  4. Square (tool) - Wikipedia

    en.wikipedia.org/wiki/Square_(tool)

    Square (tool) A square is a tool used for marking and referencing a 90° angle, though mitre squares are used for 45° angles. Squares see common use in woodworking, metalworking, construction and technical drawing. [ 1 ] Some squares incorporate a scale for measuring distances (a ruler) or for calculating angles.

  5. Longarm quilting - Wikipedia

    en.wikipedia.org/wiki/Longarm_quilting

    Longarm quilting is the process by which a longarm sewing machine is used to sew together a quilt top, quilt batting and quilt backing into a finished quilt.. A complete longarming system typically consists of a sewing machine head, a frame, a table with a layer of plastic (under which is placed a pantograph), and several rollers on which the fabric layers and batting are attached.

  6. Quilting - Wikipedia

    en.wikipedia.org/wiki/Quilting

    Quilting. Quilted skirt (silk, wool and cotton – 1770–1790), Jacoba de Jonge-collection MoMu, Antwerp / Photo by Hugo Maertens, Bruges. Quilting is the process of joining a minimum of three layers of fabric together either through stitching manually using a needle and thread, or mechanically with a sewing machine or specialised longarm ...

  7. Technical drawing tool - Wikipedia

    en.wikipedia.org/wiki/Technical_drawing_tool

    A scale ruler is a scaled, three-edged ruler which has six different scales marked to its sides. A typical combination for building details is 1:20, 1:50, 1:100, 1:25, 1:75 and 1:125. There are separate rulers for zoning work as well as for inch units. Today scale rulers are made of plastic, formerly they were made of hardwood. A pocket-sized ...

  8. Try square - Wikipedia

    en.wikipedia.org/wiki/Try_square

    A try square or try-square is a woodworking tool used for marking and checking 90° angles on pieces of wood. Though woodworkers use many different types of square, the try square is considered one of the essential tools for woodworking. [1] The square in the name refers to the 90° angle. To try a piece of wood is to check if the edges and ...

  9. Angle trisection - Wikipedia

    en.wikipedia.org/wiki/Angle_trisection

    The example shows trisection of any angle θ > ⁠3π/4⁠ by a ruler with length equal to the radius of the circle, giving trisected angle φ = ⁠θ/3⁠. Angle trisection is a classical problem of straightedge and compass construction of ancient Greek mathematics. It concerns construction of an angle equal to one third of a given arbitrary ...

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