These dial micrometers have been completely redesigned. It's a major improvement over last decade's model. Unlike the Swiss-made Etalon dial mike, these Mitutoyo micrometers are available with ranges up to 4 inches.
Indicating micrometers are designed for parts inspection and not for taking measurements. You will set the required dimension on the graduated thimble, lock the spindle in place, and then read deviations from zero on the dial.
This new generation features "water-proof" construction with rubber gaskets and rubber bellows on the lifting button and the movable anvil.
The lifting button retracts the anvil a small amount: enough for you to insert and remove the parts to be measured. When the new part is in place, release the button and you can once again take a reading on the dial. Notice that the lifting button is located on the right side of the body for the 0-1" (0-25mm) model shown below. The lifting button is on the left side on all larger models.
The dial has a simple pair of movable tolerance markers just like other Mitutoyo indicators. White gloves and micrometer stand are optional.
The indicating micrometer is designed for use as a comparator. It features a movable anvil which is retracted by pushing the lifting button. The micrometer spindle is operated like any micrometer. When you use it to set the required dimension, and lock it in place, you will be able to make parts comparisons using the dial. The pointer will show deviations.
1-2" model 510-132 shown above. Note the rubber seals which go a long way in keeping grime and dust out of the movement when used for centerless grinding operations, for example. Replacement rubber bellows are available from the parts list on this page. They are easily replaced when worn or damaged.
These Mitutoyo indicating micrometers are an excellent alternative to the high-end Etalon or Mahr micrometers. We're surprised that they don't sell as well. As Roy said, "It's a beautiful machine!" and he ought to know: he's been repairing micrometers for more than 20 years.