Can anybody show me the internal workings of a micrometer?

[Howard]

Tried Google to no avail. Any ideas?

 

[laurenlex]

. <---- Enlarge this picture. Answers within.

 

[Stojakapimp]

Here

This might not help, but it's worth a shot

 

[Ornery]

You mean a digital mic.? There's nothing but a calibrated barrel and precision theaded shaft inside.

 

[Howard]

Originally posted by: Stojakapimp
Here

This might not help, but it's worth a shot

Yep, I checked that site, but thanks for your effort.

Originally posted by: Ornery
You mean a digital mic.? There's nothing but a calibrated barrel and precision theaded shaft inside.

An analog one.

See, I have to answer this question: "A micrometer-type instrument achieves magnification by two basic principles. Explain these."

Guess I'll have to think of something.

 

[sharkeeper]

I've got them and an x-ray source but no way to film it.

 

[Howard]

Originally posted by: sharkeeper
I've got them and an x-ray source but no way to film it.

Use the eyes! The eyes!!!

 

[Ornery]

It spreads the measurement around the barrel, and uses a vernier scale for the finest increments.

Another example...

 

[BadNewsBears]

Originally posted by: Howard

Originally posted by: Stojakapimp
Here

This might not help, but it's worth a shot

Yep, I checked that site, but thanks for your effort.

Originally posted by: Ornery
You mean a digital mic.? There's nothing but a calibrated barrel and precision theaded shaft inside.

An analog one.

See, I have to answer this question: "A micrometer-type instrument achieves magnification by two basic principles. Explain these."

Guess I'll have to think of something.

Gear/friction/whatever reduction/ the opposite of reduction

 

[sharkeeper]

Use the eyes! The eyes!!!

They don't have braille mikes!

 

[Eeezee]

Using a micrometer has to do with error analysis. Imagine a ruler; each 'tick' on the ruler is usually 1mm from the next tick. This means your measurements can only be accurate to 1 mm.

A normal micrometer has 0.5 mm ticks, so your measurements are effectively twice as accurate.

You can also get very effective measurements based on number of rotations. Since one full rotation is 0.5mm, you can know that half a rotation is 0.25mm and 1/4 of a rotation is 0.125mm. This is 10x more accurate than a ruler since you can measure to within 0.1mm of accuracy fairly easily.

I don't know if that answers your question

 

[Howard]

Originally posted by: Ornery
It spreads the measurement around the barrel, and uses a vernier scale for the finest increments.

Another example...

Thanks. I just couldn't think of what two basic principles they were talking about.

 

[Instan00dles]

Also if you wanted to know, an inch micrometer has 40 threads per inch and thats why a micrometers division is .025 for ever one revolution of the anvil.

 

[Howard]

I know how to operate a micrometer.

 

[sharkeeper]

Ever use one as a c clamp?

 

[SKORPI0]

Micrometer Construction

 

[Ornery]

1. Whoa, Erik comes through in spades. Starrett no less. :thumbsup:

 

[Howard]

Totally awesome! Thanks!