A T-square is a technical

drawing Drawing is a Visual arts, visual art that uses an instrument to mark paper or another two-dimensional surface, or a digital representation of such. Traditionally, the instruments used to make a drawing include pencils, crayons, and ink pens, some ...

instrument used by draftsmen primarily as a guide for drawing horizontal lines on a

drafting table A drawing board (also drawing table, drafting table or architect's table) is, in its antique form, a kind of multipurpose desk which can be used for any kind of drawing, writing or impromptu sketching on a large sheet of paper or for reading a la ...

. The instrument is named after its resemblance to the letter T, with a long shaft called the "blade" and a short shaft called the "stock" or "head". T-squares are available in a range of sizes, with common lengths being , , , and . In addition to drawing horizontal lines, a T-square can be used with a

set square A set square or triangle (American English) is an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angle to a baseline. Types The simplest form of set s ...

to draw vertical or diagonal lines. The T-square usually has a transparent edge made of

plastic Plastics are a wide range of synthetic polymers, synthetic or Semisynthesis, semisynthetic materials composed primarily of Polymer, polymers. Their defining characteristic, Plasticity (physics), plasticity, allows them to be Injection moulding ...

which should be free of nicks and cracks in order to provide smooth, straight lines. T-squares are also used in various industries, such as construction. For example, drywall T-squares are typically made of aluminum and have a tongue, allowing them to be used for measuring and cutting drywall. In woodworking, higher-end

table saw A table saw (also known as a sawbench or bench saw in England) is a woodworking tool, consisting of a circular saw blade, mounted on an mandrel, arbor, that is driven by an electric motor (directly, by belt, by cable, or by gears). The drive ...

s often have T-square

fence A fence is a structure that encloses an area, typically outdoors, and is usually constructed from posts that are connected by boards, wire, rails or net (textile), netting. A fence differs from a wall in not having a solid foundation along its ...

s attached to a rail on the front side of the table, providing improved accuracy and precision when cutting wood.

References

{{DEFAULTSORT:T-Square Technical drawing tools Squares (tool)

See also

References