The document provides instructions for how to read and use a 0-25mm micrometer. It explains that a micrometer is a precision measuring instrument widely used in engineering. It identifies the components of a micrometer and how they are used to measure within 0.01mm. The document demonstrates how to read micrometer measurements, provides practice examples, and describes completing an inspection sheet to test comprehension.

1. Micro-TeachMicro-Teach
Fraser MateerFraser Mateer

2. StarterStarter
Glasgow London
distance

3. THETHE
MICROMETERMICROMETER
By Fraser MateerBy Fraser Mateer

4. Presentation AimPresentation Aim
To Demonstrate How To Read aTo Demonstrate How To Read a
0-25mm Micrometer.0-25mm Micrometer.

5. Presentation ObjectivesPresentation Objectives
 Explanation of a Micrometer & it’s Components.Explanation of a Micrometer & it’s Components.
 Demonstrate How to Read a Micrometer.Demonstrate How to Read a Micrometer.
 Practice Measurement With a 0-25mm Micrometer.Practice Measurement With a 0-25mm Micrometer.
 Complete a Question & Answer Sheet.Complete a Question & Answer Sheet.
 Complete a Inspection Sheet.Complete a Inspection Sheet.

6. THE MICROMETERTHE MICROMETER
 WHAT IS IT ?WHAT IS IT ?
– A PRECISION MEASURING INSTRUMENT.A PRECISION MEASURING INSTRUMENT.
 WHERE IS IT USED ?WHERE IS IT USED ?
– USED IN MANY TYPES OF ENGINEERING.USED IN MANY TYPES OF ENGINEERING.
 WHAT IT’S NOT ?WHAT IT’S NOT ?
– A CLAMP OR SPANNERA CLAMP OR SPANNER
 WHAT DOES IT LOOK LIKE ?WHAT DOES IT LOOK LIKE ?

7. The Components of aThe Components of a
0-25.00mm Micrometer0-25.00mm Micrometer

8.  Each line of theEach line of the
numbered scale on thenumbered scale on the
SleeveSleeve
= 1.00mm (1mm)= 1.00mm (1mm)

9.  The lines opposite theThe lines opposite the
numbered scale on thenumbered scale on the
sleevesleeve
= 0.50mm (1/2mm)= 0.50mm (1/2mm)

10.  The distance shownThe distance shown
on the thimble = 0.10mmon the thimble = 0.10mm

11.  Each line on theEach line on the
Thimble = 0.01mmThimble = 0.01mm

12. Readings are taken fromReadings are taken from
the centre line of thethe centre line of the
sleevesleeve

13. The Micrometer TestThe Micrometer Test

14. 1.) What is the reading ?1.) What is the reading ?

15. 1.) Answer = 3.26mm1.) Answer = 3.26mm

16. 2.) What is the reading ?2.) What is the reading ?

17. 2.) Answer = 7.76mm2.) Answer = 7.76mm

18. 3.) What is the reading ?3.) What is the reading ?

19. 3.) Answer = 16.16mm3.) Answer = 16.16mm

20. InspectionInspection
A
CB

21. InspectionInspection
25mm
16mm20mm

22. PresentationPresentation
SummarySummary
The Micrometer is a precision measuringThe Micrometer is a precision measuring
instrument.instrument.
Widely used in Engineering.Widely used in Engineering.
Accurate to within 0.01mm.Accurate to within 0.01mm.
Size ranges in multiples of 25mm (e.g.Size ranges in multiples of 25mm (e.g.
0-25, 25-50, 50-75mm).0-25, 25-50, 50-75mm).
Micrometers come in various forms.Micrometers come in various forms.

23. QuizQuiz