shop 1 english micrometer

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By: m.shree (16 month(s) ago)

it s very usefull

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Hey, Could I please down load this PPT. IT is one of the best I have ever seen

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Request Download copy of "Reading the Micrometer"

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Reading the Micrometer : 

Reading the Micrometer

Slide 2: 

Know the names of the different parts of the Micrometer.

Rules for Using a Micrometer : 

Rules for Using a Micrometer Never take hold of the thimble and whirl the frame around to open or close the micrometer.

Rules for Using a Micrometer : 

Rules for Using a Micrometer Do not use as a C-clamp

Rules for Using a Micrometer : 

Rules for Using a Micrometer Always use the Ratchet Stop to tighten the micrometer.

Rules for Using a Micrometer : 

Rules for Using a Micrometer Always undo with the thimble. If you undo with the ratchet you may unscrew it.

Rules for Using a Micrometer : 

Rules for Using a Micrometer When you have to open or close the micrometer a long way. Hold it in one hand and roll it in the palm of the other hand.

Rules for Using a Micrometer : 

Rules for Using a Micrometer When storing the micrometer always leave some space between the anvil and the spindle. Do Not leave tight.

Rules for Using a Micrometer : 

Rules for Using a Micrometer Learn how to hold it in your hand so it is comfortable to hold.

Slide 10: 

The sleeve goes from 0 to 0. The last 0 could have a 10 there. It represents a movement of 1 inch (1.000) Each large number is equal to .100. 1= .100, 2= .200, 5= .500 etc. The Lines in between the numbers represent .025 thousands of and you would count them up .025, .050, .075, .100

Slide 11: 

The Thimble on the side of the sleeve moves as you rotate it. Each mark is = to .001. Each time it moves one full turn it travels a distance of .025.

Slide 12: 

To read you must take each section and add it together The last large Number is 5 so we have .500 we have one line past the 5 so we have .025 and the thimble is turned to the 7 so we have .007 add it together and we have .532

Slide 13: 

The last large Number is 2 so we have .200 we have three lines past the 2 so we have .075 and the thimble is turned to the 18 so we have .018 add it together and we have .293

Slide 14: 

The last large Number is 4 so we have .400 We have one line that is partially showing but the thimble is not past the 0 so we have .000 and the thimble is turned to the 24 so we have .024 add it together and we have .424

Slide 15: 

The last large Number is 1 so we have .100 we have 1 line past the 1 so we have .025 and the thimble is turned to the 13 so we have .013 add it together and we have .138

Slide 16: 

The last large Number is 2 so we have .200 we have 1 line past the 2 so we have .025 and the thimble is turned to the 12 so we have .012 add it together and we have .237

Slide 17: 

Some times the thimble is part way in between the two numbers. What you really need is a vernier Micrometer. A vernier micrometer will allow you to read to ten- thousandths of an inch.

Slide 18: 

But since we don’t with the micrometers I have, this is what you can do. You will have to carry it out to a 4th digit. That is ten thousandths of an inch. Write down the answer to this problem add a .0005 to it because it is about halfway in between the 12 and 13. .6875

Slide 19: 

Try this one? Get the answer before you look!! .625 Don’t forget the decimal