grouped depending on their hardness.

is a measuring instrument and used to draw lines.

is used primarily as a guide for drawing horizontal parallel lines.

are transparent, triangular-shaped drawing instruments that are used with either a T-Square or parallel ruler for drawing vertical and inclined lines.

is generally a rectangular shape and made of soft wood. It is used to support a drawing sheet.

is used to draw an arc or circle with known dimensions.

is used to draw and measure the angles of lines in the drawing.

are made of plastic and are used when you need to draw irregular curves or arcs which cannot be drawn using a compass.