0-to-12-Inch (0-to-300mm) Range * Lock screw for sliding jaw * Hardened stainless steel depth rod * Graduations: 0.002-Inch, 0.020mm metric * Sharp black graduations on the satin finished bar * Vernier caliper with inch/metric measuring range and 0.001"/0.02mm graduation for measuring the inside diameter (ID) and outside diameter (OD) of holes, grooves, and tube thicknesses, and depth and step measurements of bores and grooves * Sharp black graduations on satin finished bar ease reading * Fine-adjust screw ensures accurate measurements and locking screw secures the measurement tightly in place for accurate reading * Hardened stainless steel depth rod is durable and wear-resistant * Includes fitted case