Tools for Drafting

The tallest skyscrapers, sturdiest bridges and most fascinating monuments all started with a simple drawing. The architects or engineers responsible for erecting structures map out plans on a drafting board with tools designed for drafting. Common tools such as pencils, protractors, drafting triangles, drafting compasses and others are used to sketch accurate structure building plans. Using these tools is one of the basics that professionals in the construction trade learn. If you are planning to follow in their footsteps, learning how to use drafting tools is the first step.

The Right Pencil

Know which type of pencil to use when sketching. There are three basic pencils used. The first is a 6H .5mm pencil. This pencil is used to sketch the primary lines of a drawing. Darker pencils such as a 2H .9mm are used to thicken and darken a drawing's outer lines. A .5mm pencil with a darker lead rating typically is used to add lettering to sketches and the plan.

Protractor

Drawing a lot of angles are required when drafting. Sketching these freehand is extremely difficult. To draw a specific angle, position the protractor's straight edge with the vertex of a perpendicular line or right angle. Mark the vertex using the measurements of the arced part of the protractor. Use a ruler to draw a straight line toward that mark.

Compass

A compass is used to create perfectly formed arcs in a drawing. Pull the compass's legs apart to the correct distance sought from each other. Place the centrifugal point at the center of the planned arc. Hold the tool firmly with one hand and use the second leg, with a pencil fitted on it, to draw the arc. Rotate the compass to complete the arc into a circle by using your other hand to twist the top of the compass. It is important that the centrifugal point does not move to draw an accurate arc.

T-squares

A T-square has a gigantic, protruding ruler fitted on a hilt-like base. This tool is fitted onto a drafting table or board. Secure the base on the top edge of the table. This will allow you to slide the T-square across the table to draw accurate and straight vertical lines. Another T-square can be fitted on the side of the table for horizontal lines.