Depending on the size of the ruler there are two types of ruler – a short ruler and a long ruler. Short rulers are 15 centimeters which are very convenient to carry and long rulers are 30 centimeters or 12 inches long, it is useful to draw larger drawings.

Drafting triangles, usually made of clear plastic, are used to measure angles and draw vertical or inclined lines. The two types available, the 45-degree triangle and the 30/60-degree triangle, are named by the size of their acute, or small, angles. The 45-degree triangle has a 90-degree angle and two 45-degree angles; the 30/60 degree triangle has a 90-, a 30- and a 60-degree angle. Drafting triangles are available in sizes ranging from four to 18 inches.

T-squares are available in a range of sizes, with common lengths being 18 inches (460 mm), 24 inches (610 mm), 30 inches (760 mm), 36 inches (910 mm) and 42 inches (1,100 mm).