These dial indicators display the number of revolutions of a wheel handle or knob. The red long hand and black short hand allow for precise reading of the number of revolutions. Choose between a clockwise and counterclockwise rotative direction of the hands. Graduations of 12 and 25 are available. These indicators can mount onto DHW indicator handwheels, DHK Indicator Knobs, or DRK Knurled Indicator Knobs. Includes a screw for preventing dial plate rotation. The housing is made from matte black steel. The dial plate is made from aluminum. The window is made from acrylic plastic.