Reading the Micrometer

Reading the Micrometer Reading the Micrometer - Start

Added : 2016-05-30 Views :74K

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Reading the Micrometer




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Presentations text content in Reading the Micrometer

Slide1

Reading the Micrometer

Slide2

Objectives

Identify micrometer parts

Determine micrometer reading

Slide3

This is a English micrometer

thimble

sleeve

anvil

spindle

frame

Slide4

Slide5

0 1 2 3 4 5 6 7 8 9

0

1

2

3

24

22

23

For clarity we will use an animated figure.

Slide6

Let’s take a close

look at the sleeve of the micrometer.

Slide7

0 1 2 3 4 5 6 7 8 9 0

0

1

2

3

24

22

23

0 1 2 3 4 5 6 7 8 9 0

1/10 inch (0.100)

25/1000 inch (0.025)

1/1000 inch (0.001)

One inch (1.000)

Slide8

0 1 2 3 4 5 6 7 8 9

10

12

13

14

11

9

15

Slide9

Now, an example...

Slide10

0 1 2 3 4 5 6 7 8 9

15

16

17

18

14

13

19

15

17

16

14

13

18

15

0 1 2 3

Smallest Measurement

0.000

Largest sleeve reading

0.300

Now, an example...

One mark past

largest sleeve

reading

0.025

Thimble Reading

0.016

0.341 inches

Slide11

A digital micrometer

Slide12

Another example...

Slide13

20

15

0 1 2 3 4

20

19

18

17

16

24

23

22

21

0

Smallest Measurement

Largest sleeve reading

Three marks past largest sleeve reading

Thimble Reading

3.000

0.400

0.075

0.021

3.496 inches

Another example...

Slide14

Review...

Lightly tighten on object.

Determine smallest measurement when micrometer is closed.

Find largest visible number on sleeve and multiply times 0.100.

Slide15

Review...

Count number of marks past largest visible number on sleeve and multiply times 0.025.

Multiply thimble reading times 0.001.

Add all numbers to get answer.

Slide16

Slide17

Slide18


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