Turning I (Between Centers)

Machining - Classic Level I (entry level)



  • Applied mathematics
  • Cutting tool assembly
  • Cutting tool selection
  • Geometrical dimensioning and tolerancing (GD&T)
  • Inspection
  • Machine maintenance
  • Machine safety
  • Machining applications
  • Material preparation
  • Measurements
  • Operations
  • Print reading
  • Process planning
  • Setup
  • Shop safety

See Certification Toolkit for a complete list of competencies.

Industry Standard

Machining Level I


  • Assessment Type: Print (from official blueprint only)
  • MET-TEC Inspection: Required
  • Performance Affidavit: Submitted online via evaluator


  • 71 questions
  • 90-minute time limit
  • Proctor required
  • Paper version available
  • Retake policy

Note: The theory assessment for Turning I (Between Centers) and Turning I (Chucking) is the same. Once a candidate completes the test for either credential, the test is marked as passed for both. The candidate must complete both performance assessments to earn both credentials.


Visit the Credentialing Fees page for the latest pricing information.

Study Material