This document outlines a lesson plan for teaching students how to use a micrometer. The objectives are for students to understand the purpose of a micrometer, identify its parts, operate it correctly, and make accurate readings. The lesson covers an introduction, demonstrations of reading and using a micrometer, tests of the parts and reading skills, and a summary. It concludes by noting the next lesson will cover imperial micrometers.

1. Interpreting
Engineering
Information
Reece Hancock

2. Prelims
• Fire Exit
•Mobiles turned off/ silent
• No smoking
• Questions- nominate/ wait for pause
• Notes- handout
• Content- power point/ open discussion
• Time 15mins
• Test/ confirmation

3. Introduction
Metric 0-25mm Micrometer

4. The aims and objectives
By the end of the lesson the students will be able to read and interpret a precision
engineering instrument.
• Understand the purpose of a micrometer
• Name the parts of a micrometer
• How to operate the micrometer
• Accurately read the information from a micrometer

5. Content
Introduction to a micrometer
Reading a precision instrument
Test on the parts of a micrometer
Test on reading a micrometer
Consolidation
Summary
Next Lesson

6. Metric 0-25mm Micrometer
The micrometer is a precision measuring instrument, used by engineers.
Each revolution of the ratchet moves the spindle face 0.5mm towards the anvil face.
The object to be measured is placed between the anvil face and the spindle face.
The ratchet is turned clockwise until the object is ‘trapped’ between these two surfaces and
the ratchet makes a ‘clicking’ noise.
This means that the ratchet cannot be tightened any more and the measurement can be
read.

7. Metric 0-25mm Micrometer
The micrometer is also available in a range of sizes:- 0-25mm,
25-50mm, 50-75mm………..
The micrometer when not in use must be stored in its supplied
case with it spanner to prevent damage.
Before using the micrometer it should be checked to see if it has
Quality Control (Q.C) sticker on the frame.
The daily use of a micrometer means that it should be checked
regularly during the course of the day. This can be achieved by
using a range of engineers slip gauges e.g. 5mm/10mm to prove
its accuracy.
The micrometer can be adjusted using its supplied spanner.
However this must only be completed by a trained person from
the quality control department.

8. 0-25mm Micrometer Parts
Accurate to 0.01mm
The anvil and spindle face are made
from tungsten carbide to prevent
wear and maintain an accurate
surface to measure from.

9. Name the Micrometer Parts
F E D
C
A H B
Anvil
face
G
Thimble Lock
Nut
Spindle
face
Rachet Spindle Frame
Sleeve

10. Understanding the scale

11. Reading the scale

12. Example of Measuring Readings
12.66mm
16.355mm
7.76mm

13. 12.66mm
16.355mm
7.76mm

14. Written Test

15. Name the Micrometer Parts
F E D
C
A H B
Anvil
face
G
Thimble Lock
Nut
Spindle
face
Rachet Spindle Frame
Sleeve

16. .ANSWER:
A
B
C
D
E
F
16.16mm
6.26mm
12.855mm
10.66mm
3.26mm
5.855mm

17. Consolidation
• Understand the purpose of a micrometer
• Name the parts of a micrometer
• How to operate the micrometer
• Accurately read the information from a micrometer

18. Summary

19. Next lesson
Looking at the imperial micrometer (Inches)

20. Reference
• http://en.wikipedia.org/wiki/Micrometer
• http://its.foxvalleytech.com/MachShop1/Inspection/MetricMic.htm
• http://www.technologystudent.com/equip1/microm1.htm
• http://www.cityandguilds.com/qualifications-and-apprenticeships/
engineering/mechanical/2850-
engineering#tab=information&acc=level1

21. Pack away.

22. .ANSWER:
A
B
C
D
E
F

23. Name the Micrometer Parts
F E D
C
A H B
Anvil
face
G
Thimble Lock
Nut
Spindle
face
Ratchet Spindle Frame
Sleeve

24. Lesson Plan
• Date 6/10/14 Monday
• Class Level 1 Engineering
• Introduction Metric 0-25mm Micrometer
• The aims and objectives By the end of the lesson the students will be able to read and interpret a precision engineering instrument.
 Understand the purpose of a micrometer
 Name the parts of a micrometer
 How to operate the micrometer
 Accurately read the information from a micrometer
Content Equipment Activity
• Introduction to a micrometer Using powerpoint Students take notes
• Reading a precision instrument Using powerpoint/ micrometer Students practice holding and using a micrometer. Q&A
• Test on the parts of a micrometer Handout of test on parts Students answer question paper
• Test on reading a micrometer Handout of test on reading Students answer question paper
• Consolidation Using powerpoint Students mark each others paper. Q&A
• Summary Using powerpoint Q&A
• Next Lesson Using powerpoint Make a note on next lesson’s topic
• Equipment needed
• Powerpoint presentation
• Micrometers
• Test papers
• Evaluation What went well …………………………………….. Areas for improvement……………………………………………