Range land widths: 0-25mm. Widths of either internal or external grooves and lands can be quickly measured. Graduated in 0.01mm and has a reach of 41mm maximum hole depth. Each measuring disc is 7mm O.D., 0.63mm thick and hardened, ground and lapped. With ratchet stop. Satin chrome finish with quick-reading staggered graduations. Furnished with a case.
