Range land widths: 0-1.000". Widths of either internal or external grooves and lands can be quickly measured. Graduated in .001" and has a reach of 1-5/8" maximum hole depth. Each measuring disc is 9/32" O.D., .025" thick and hardened, ground and lapped. With ratchet stop. Satin chrome finish with quick-reading staggered graduations. Furnished with a case.
