Micrometers (Screw-Type Gage) use a screw thread to make accurate and repeatable precision measurements.
Come in metric or inch, size ranges, with or without vernier. Digital or analog.
Outside
![](http://toolnotes.com/wp-content/uploads/2019/06/Outside-Micrometer-1024x768.jpg)
On many metric micrometers, the barrel scale is graduated in half millimeters and the dial reads to the nearest .01 mm.
![](http://toolnotes.com/wp-content/uploads/2019/07/mm-micrometer-1024x524.jpg)
![](http://toolnotes.com/wp-content/uploads/2019/07/InchMIcrometer-1024x538.jpg)
Vernier Scale on Micrometers
Some micrometers add a vernier scale to increase their resolution.
Depth
Inside
![](http://toolnotes.com/wp-content/uploads/2019/06/InsideMicrometer1-1024x260.jpg)
Specialty
Screw Thread Micrometer
![](http://toolnotes.com/wp-content/uploads/2019/06/ScrewThreadMicrometer-1024x768.jpg)
Taper Micrometer
![](http://toolnotes.com/wp-content/uploads/2019/06/TaperMicrometer-1024x768.jpg)
Blade Micrometer
Tube Micrometer
Caliper Type Micrometer
Point Micrometer
V-Anvil Micrometer
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