Drilling Machine Operator how-to

How to Check Hole Size with Pin Gauges

Pin gauges confirm size.

Updated By the Career Education Institute Curriculum Team
Quick answer

Pin gauges confirm size. In short: clean; pick; try, then complete the remaining steps below.

Step by step

  1. Clean the hole.

  2. Pick go and no-go pins.

  3. Try the go pin.

  4. Try the no-go pin.

  5. Record.

  6. Adjust if needed.

Safety reminders for drilling machine operators

  • Clamp parts securely
  • Never hold parts by hand
  • Wear eye protection
  • No gloves near spinning bits

Speeds and feeds · RPM · Tap · Ream · Countersink · Pilot hole: see the full drilling machine operator glossary.

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