Home > Metals and Engineering > Compulsory Units > MEM12024A: Perform computations > Perform computations
Calculations are usually done using a pen and paper or a calculator. With all calculations, some estimate should be made of the final answer. This is the best way to pick up unintentional errors.
All calculations should be checked. If possible, it is best to check using a different approach to the problem.
In a metal & engineering workshop information may be recorded on a notepad, paper, blackboard, whiteboard, sheet of metal etc. Many people may need to access and use the information. It is essential to develop a style of writing that is legible to everyone.
Abbreviations are widely used in the metal and engineering and related industries, so you need to be familiar with the common abbreviations. This knowledge allows you to understand recorded information and use abbreviations to convey information.
Some common abbreviations used in engineering drawings are:
| AS | Australian Standards |
| PCD | pitch circle diameter |
| MS | mild steel |
| mm | millimetre |
| ckd | checked |
| + | tolerance |
| M6x1 | thread detail: M = metric thread, 6 = diameter of thread mm, 1 = pitch of thread in mm |
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