Advanced Hole Inspection

Provided by: Tooling U - SME

Holes that require a specific type of fit, either clearance, interference, or transition, also require a higher degree of accuracy. Noncontact hole inspection devices provide this, as well as an ability to measure fragile parts and high volumes of parts. These more sophisticated variable hole inspection devices include coordinate measuring machines, measuring microscopes, optical comparators, borescopes, laser systems, and air gages. Job specifications, part dimensions, and feature size all determine which hole inspection device to use on holes requiring a certain fit. Choosing a tool without a high degree of accuracy could result in an out-of-tolerance hole passing inspection. After taking this class, users will be able to describe advanced methods for inspecting hole dimensions and geometric features in a lab setting.

Course Objectives:

  • Explain the purpose of advanced hole inspection
  • Identify methods of describing tolerance
  • Explain the allowance for clearance and inference fits
  • Explain the allowance for a transition fit.
  • Describe the characteristics of noncontact instruments
  • Explain how to inspect holes using a borescope
  • Explain how to inspect holes using an air gage
  • Explain how to inspect holes using a laser system
  • Explain how to inspect holes using an optical comparator
  • Explain how to inspect holes using a measuring microscope
  • Explain how to inspect holes using a coordinate measuring machine.

Recommended Background

  • Recommended for manufacturing personnel, particularly for the quality control and inspection department.

Course ID


Skill Focus



Tooling U - SME

Employee Type

New Applicants,1st level Supervisors, Operations teams, Leadership

Method of Delivery


Estimated Effort

2 hrs



If you are in WHIN region, contact your HR for a coupon code