Common Drawing Materials
1. Drawing paper:
The paper commonly used for technical drawing is A3 paper. The standard size of drawing sheets are:
A0: 841mm (width) × 1189mm (height)
A1: 594mm (width) × 841mm (height)
A2: 420mm (width) × 594mm (height)
A3: 297mm (width) × 420mm (height)
A4: 210mm (width) × 297mm (height)
A5: 148mm (width) × 210mm (height)
The grade of the pencil lead is marked on the pencil. For instance, HB denotes medium grade. An increase in hardness is shown by values put in front of H such as 2H, 3H, etc. For example, a 3H pencil is harder than a 2H pencil. Softer pencils are marked as 2B, 3B, 4B, etc. A pencil marked 3B is softer than a 2B pencil. A pencil marked 4B is softer than 3B, etc.
Starting a drawing may be made with H or 2H pencils. Lettering and dimensioning should be done with H and HB pencils only.
3. Pencil sharpeners:
This material is used to sharpen all pencils to a conical point shape. It contains a blade on a plastic or metal frame.
As the name implies, this material is used to remove (erase) mistakes. It is made of soft quality rubber.
5. Dusting Brush:
The brush is used to remove dirt from the paper after erasing. Tissue paper can serve the same purpose.