Manufacturing… · SHS1 Manufacturing Engineering

Lesson notes

Learning Objectives

Indicator: 1.3.1.LI.2 - Describe and use gauges to measure the dimensions of a work piece.

By the end of the lesson, learners can:

Identify at least six common gauges and measuring tools by name and state the specific dimension each one measures (for example, vernier callipers for internal and external dimensions, micrometre screw gauge for small precise thicknesses).
Read measurements accurately from a vernier calliper and a micrometre screw gauge to the required degree of precision (0.02 mm and 0.01 mm respectively).
Select the appropriate gauge for a given measuring task and justify their choice based on the size, shape, and required accuracy of the work piece.
Measure the dimensions of a given work piece using at least two different gauges, record the readings, and present the results to the class.
Explain the importance of using gauges for quality control in manufacturing, linking back to the standards and datum concepts covered in previous weeks.

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Curriculum details

Strand: Manufacturing tools, equipment and processes (Strand 3)
Sub-strand: Manufacturing tools and equipment (3.1)
Content standard: 1.3.1.CS.2 - Demonstrate knowledge and understanding of standards, measurement, and gauging in the manufacturing process. 1.3.1.LO.1 Apply the principles of marking out, measurement and gauging; and accurately use industry standards in manufacturing a product.
Indicator: 1.3.1.LI.2 - Describe and use gauges to measure the dimensions of a work pieces.
Suggested placement: Semester 2, Week 7 (Week 27 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 41

Exemplars (from the NaCCA curriculum)

Collaborative Learning: Learners in mixed-ability groups identify and explain the use of measuring tools and gauges (such as vernier callipers, micrometre screw gauges, steel scales, vernier height gauges, vernier depth gauges, bevel protractors, dial gauges, engineering square, V- block and radius gauge) in the workshop.
Experiential Learning: In small groups learners use measuring tools and gauges to measure the dimensions of a work piece. Let learners share their work with others for comments.
Teaching and Learning Materials:
- Textbooks
- Library resources
- Internet access
- Measuring tools and gauges
- Work pieces
Assessment (1.3.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning; Level 4 Extended critical thinking and reasoning.