Hole Test or Three Point Micrometer

Hole Test or Three Point Micrometer

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Holtest (Type II) Series 368-Three-Point Internal Micrometers Series 368Features

The Holtests (type II) have three contact points made of alloyed steel.

  • Measurement can be taken closer to the bottom of the blind bore.
  • Can measure deep holes using an Extension Rod (optional).
  • With Ratchet Stop for constant force.
  • Setting Rings for zero point adjustment are optional.
  • Supplied in fitted plastic case up to 100mm / 4. Over 100mm / 4 supplied in wooden case.

    Technical Data
    • Graduation: 0.005mm or .0002"
    • Measuring method: Three-point method
    • Contact point: Harden Steel