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Unit 016 – Engineering Drawing for Technicians – Level 3 – 10 Credits [T/600/0266]

Aim and purpose

This unit will enable learners to produce engineering drawings of different components, assemblies and circuits using a variety of sketching, drawing and computer-aided drafting techniques.

Unit Introduction

It is important that when a product has been designed it is manufactured correctly and to specification. To achieve this it is crucial that the people making the product in a workshop are provided with well presented engineering drawings, produced to international standards and conventions. This avoids errors of interpretation which can lead to the scrapping of expensive parts.

An understanding of how graphical methods can be used to communicate information about engineering products is an important step for anyone thinking of taking up a career in engineering. This unit gives learners an introduction to the principles of technical drawings and their applications using hand drawing and computer-aided drafting (CAD) techniques.

Learners will start by carrying out freehand sketching of simple engineering products using pictorial methods that generate three-dimensional images. A range of standard components, such as fixing devices, will be sketched together with other solid and hollow items. Learners are then introduced to a more formalised drawing technique that conforms to British Standards and will put this into practice through a number of drawing exercises. A consistent presentation style will be used as learners draw single part components and simple engineering assemblies.

These drawings will contain all the information needed to manufacture or assemble the product, including information such as dimensions, manufacturing notes and parts lists. The use of conventions to represent standard items will be investigated, such as screw threads and springs in mechanical type drawings or circuit symbols such as solenoids and resistors in electrical/electronic type drawings.

Having learned the principles of engineering drawing, learners will then move on to using a two-dimensional (2D) CAD system for the production of drawings using basic set-up, drawing and editing commands. The first task is to produce a drawing template which can be saved to file, as this reinforces the concept of standardisation and consistency of presentation. This is followed by drawing exercises of single-part components, a simple multi-part assembly and circuit diagrams.

Overall, the unit will develop learners’ ability to create technical drawings and allow them to compare the use of manual and computer aided methods of  producing engineering drawings.

Learning outcomes
On completion of this unit a learner should:

  1. Be able to sketch engineering components
  2. Be able to interpret engineering drawings that comply with drawing standards
  3. Be able to produce engineering drawings
  4. Be able to produce engineering drawings using a computer aided drafting (CAD) system.

Recommended Resources


Byrnes, D – AutoCAD 2009 for Dummies (John Wiley and Sons, 2009) ISBN 3527704833
Cheng R – Using Pro/Desktop 8 (Delmar Publishing, 2003) ISBN 1401860249
Conforti F – Inside Microstation (Onward Press, 2006) ISBN 1418020842
Simmons C, Maguire D and Phelps N – Manual of Engineering Drawing (Butterworth-Heinemann, 2009) ISBN 9780750689854
Tooley M and Dingle L – BTEC National Engineering (Newnes, 2007) ISBN 0750685212




This unit links to the following related units:

  • Unit 008 – Engineering Design
  • Unit 015 – Electro, Pneumatic and Hydraulic Systems and Devices
  • Unit 017 – Computer Aided Drawing in Engneering
  • Unit 021 – Engineering Secondary/Finishing Processes

Links to the following courses


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