General Tools Fractional Scale Vernier Caliper a precise 5-inch capacity measurement tool designed for both inside and outside measurements. It features a full-length depth gauge, friction roller adjustment, and a slide lock for ease of use and accuracy. The scale is graduated in 16ths and 32nds with a vernier reading down to 1/128 inch, making it i for detailed and fractional measurements. This caliper is a reliable choice for professionals and hobbyists who require precision in their work. Model Number: 722