• Ring-type knurled lock nut for quick and sure locking.
  • Smooth friction thimble for uniform pressure.
  • Extremely hard and stable one-piece spindle.
  • Micro-lapped carbide measuring faces.
  • Auto-Off after 30 minutes.
  • HOLD, ZERO, and PRESET buttons.
  • Retains the true zero reading of the micrometer.
  • Case included.