Micro-TeachMicro-TeachFraser MateerFraser Mateer

StarterStarter

Glasgow

Londondistance

THE THE MICROMETERMICROMETERBy Fraser MateerBy Fraser Mateer

Presentation AimPresentation AimTo Demonstrate How To Read To Demonstrate How To Read a 0-25mm Micrometer.a 0-25mm Micrometer.

Presentation Presentation ObjectivesObjectives 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 Practice Measurement With a 0-25mm Micrometer.Micrometer.

Complete a Question & Answer Sheet.Complete a Question & Answer Sheet.

Complete a Inspection Sheet.Complete a Inspection Sheet.

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 ?

The Components of a The Components of a 0-25.00mm 0-25.00mm MicrometerMicrometer

Each line of the Each line of the numbered scale on the numbered scale on the Sleeve Sleeve = 1.00mm (1mm)= 1.00mm (1mm)

The lines opposite The lines opposite the numbered scale on the numbered scale on the sleevethe sleeve= 0.50mm (1/2mm)= 0.50mm (1/2mm)

The distance shown The distance shown on the thimble = on the thimble = 0.10mm0.10mm

Each line on the Each line on the Thimble = 0.01mmThimble = 0.01mm

Readings are taken from Readings are taken from the centre line of the the centre line of the sleevesleeve

The Micrometer TestThe Micrometer Test

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

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

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

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

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

3.) Answer = 16.16mm 3.) Answer = 16.16mm

InspectionInspection

A CB

InspectionInspection

25mm

16mm

20mm

Presentation Presentation SummarySummaryThe Micrometer is a precision The Micrometer is a precision

measuring instrument.measuring 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 Size ranges in multiples of 25mm

(e.g. 0-25, 25-50, 50-75mm). (e.g. 0-25, 25-50, 50-75mm). Micrometers come in various forms.Micrometers come in various forms.

QuizQuiz