Drawing Instruments

Drawing, in its various forms, is the most common way of communicating ideas in Design and Technology. Free-hand Sketching helps the designer to work out initial ideas and to share them with others. Sketches can be in Perspective or follow one of the more formal Technical Drawing conventions such as Isometric, Oblique or Orthographic.

Sketching is a very quick and free way of working out ideas and all those involved in Design and Technology are encouraged to develop this skill - it only takes practice!

Use of rulers and compasses can help by providing a guide lines for example, but when a design is finalised and a drawing has to be produced which can be measured off, Drawing Instruments are used to create detailed Working Drawings or Plans.

Modern industrial practice has largely replaced the production of Technical Drawings by Draughtsmen working at a drawing board with Computer Aided Design (CAD) but this is still based on Technical Drawing techniques and conventions.

T-square	A drawing instrument comprising usually a plastics blade and stock made also of plastics or wood which is pressed against the edge of a drawing board to enable parallel lines to be drawn across.
Set Squares	Triangular shaped Drawing Instruments usually used in conjunction with a T-square or rule to draw lines at 45, 60, 30 and 90 degrees to it.
Adjustable Set Square	Can be set at any angle to draw a series of parallel lines for example.
Protractor	Used for measuring angles and available in 180 degree and 360 degree versions
French Curves	A set of templates of curved shapes used for drawing curves through a series of points