Roll down until the end of the page, drag and drop the thimble of bigger visualization in the vertical to fine aproximation or the thimble of smaller visualization in the horizontal to fast advance.
In metrology, the micrometer is not able to do depht measures with no association with other devices. The same millimeter thread, and other components, can be used to this goal. It just need some modifications.
You must be familiarized with the use of the external micrometer. The reading of the depth gauge micrometer follows the same logic. However, it's necessary, to take some cautions. Interact with the simulator below and see that the line coined the sleeve correspond to the millimeter covered by the thimble. Other detail, is that the increment of hundredths is done in the opposite direction to the obseverved in the micrometer.