4 piece design for easy use
Larger diameter for easy handling and much easier to read
Clear black graduations on satin finish for easy reading
Carbide tipped faces for long life,durability,and superb precision
.001 graduations for the close tolerences.Locking screw to hold position
2.00 standard included to insure costant true readings.
Wrenches included for easy adjusting

Compare this to the Mitutoyo,same quality and accuracy,for a fraction of the price.