Fractional-display digital calipers have adjustable jaws that slide along a beam to measure between two opposite sides of a tool or part. The LCD displays metric, decimal inch, and fractional inch units, and typically have fractional resolution to 1/64". They can be set to zero at any point and include an on/off button and allow users to toggle between decimal inch, decimal mm, and fractional inch output readings. Digital calipers are easier to read and operate than dial or vernier calipers and offer higher precision than can be determined with the naked eye on a mechanical scale. Calipers that take inside diameter, outside diameter, step, and depth measurements are also known as 4-way calipers. These fractional display units are commonly used in home machine shops, or for woodworkers who require fractional measurements.