Machine Tool Metrology 101

A Three-Day Course on Machine Tool Metrology Applications

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presented by IQL Independent Quality Labs, Inc.


hosted by Connecticut Center for Advanced Technology, Inc.

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Abstract | Who Should Attend | What You Will Learn | Prerequisites | Instructor | Facility | Outline | Full Agenda [pdf] | Registration | Discount | IQL Contact | Lodging


This program provides an understanding and application of fundamental metrology principles specific to the testing and improvement of machine tools and coordinate measuring machines (CMMs). Through lecture and demonstrations, focus is placed on the importance of functionally significant tests, the proper use of terminology for describing these tests and parametric test procedures as outlined in ANSI and ISO machine tool and CMM standards.

"I highly recommend this class. It is time well spent and will result in quick return on the time invested." - Industrial Training & Support Engineer

Who Should Attend

This course is designed for manufacturing engineers and technicians concerned with machine tools productivity and purchasing specifications. Others who should consider attending this program include:

  • managers, engineers, and technicians engaged in:
    • plant management and supervision
    • manufacturing operations
    • quality assurance, control, and maintenance
    • factory, assembly, and field service
  • machine tool builders and designers
  • machine tool rebuilders and distributors
  • machine tool sales, service, and testing representatives
  • technology educators
  • machinists


What You Will Learn

By attending this information-packed program, you will...

  • assess, characterize and understand the accuracy errors of machine tools
  • perform the necessary tests for particular applications
  • create specifications based on standards
  • learn misconceptions of "pitch error" or "axis" compensation
  • communicate in terms used and understood by the machine tool community
  • prescribe the correct acceptable test procedures
  • compare the accuracy of similar machines and predict performance
  • make informed purchase decisions
  • discover the importance of proper foundations
  • make adjustments to improve performance
  • understand the relationship between machine performance and on-machine measurement

See Course Outline for more...


Basic Skills / Prerequisites

To attend this course, you should have a familiarity with machine tools (lathes, milling machines, machining centers, measuring machines, etc.) and their functions, terminology, and applications. You should also be proficient with shop level math (trigonometry, algebra, geometry, etc.).



Robert (Buz) Callaghan, MSME, is the Senior Engineer at IQL Independent Quality Labs, Inc. He has over 49 years experience in precision tool and machine design and metrology. Buz has published numerous papers on the accuracy of CMMs and CNC machine tools. He is an active member of the ASME standard committees: B5.54 "Methods for Performance Evaluation of Computer Numerically Controlled Machining Centers," and B5.57 "Methods for Performance Evaluation of Computer Numerically Controlled (CNC) Lathes and Turning Centers," as well as a supporter of ISO 230 Test code for machine tools.

"I am very pleased with the class. Buz did an excellent job in delivering the information, addressing it to individual backgrounds and experiences, patiently addressing all questions and all levels of questions. He stayed focused on topic despite all of the varied questions...I appreciate his depth of knowledge, and his willingness and patients [sic] to convey that information to others." - Industrial Training & Support Engineer


Host Facility

The Connecticut Center for Advanced Technology, Inc. (CCAT) is a nonprofit corporation that provides services and resources to entrepreneurs and businesses and, through collaboration with industry, academia, and government, helps companies innovate and compete, thereby strengthening our nation in the global market. Their core programs address military and civilian industrial manufacturing needs, promote energy planning and policy initiatives, stimulate innovation and improve workforce development efforts -- particularly those geared toward technology competitiveness. CCAT is also actively involved in researching and field-testing how advances in lasers, nanotechnology, computational modeling and next-generation manufacturing can aid the competitive needs of U.S. industry. CCAT is located at 409 Silver Lane, East Hartford, CT 06118. Please follow these Directions to the CCAT Advanced Manufacturing Center, rather than using a GPS.


Schedule & Registration

Registration Fees


This fee includes all text and note materials, continental breakfast each morning and lunches each day of class. Interested parties may register through IQL.

Companies sending more than one attendee will receive a 10% discount on each additional registration.


7:30 AM - 8:00 AM Tuesday

Course Hours:

8:00 AM - 5:00 PM Tuesday through Thursday

Substitution and Cancellations

A registration may be transferred by submitting the name of the substitute. A full refund will be made for cancellations received 10 working days prior to the start of class. A 10% service fee will be charged for cancellations after that date. Registrants who do not show up for the course will still be billed or may request a credit toward a future course.


IQL Contact

Charlotte Gardiner

IQL Independent Quality Labs, Inc.

T: 866-549-2920 X-101




Lodging and transportation are the responsibility of the attendee. Click here for suggested Lodging.


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Course Outline

Accuracy Characterization - An Introduction

  • Advantages and benefits
  • Driving forces behind ANSI & ISO machine tool standards
  • Higher tolerances
  • Smaller lot sizes
  • Focus on process control
  • Need for a unified language and concise terminology

Fundamentals & Philosophies of Machine Tool Metrology

Machine Metrology Training in Demo Room
  • Rigid body and flexible behavior
  • Error motion and degrees of freedom
  • Deterministic method applied to machine tools
  • Abbe principle
  • Sign conventions
  • Sensitive and non-sensitive functional application
  • Thermal effect

Selection of Measurement Instruments

  • Application - advantages and disadvantages
  • Basics of use
  • Data output

Test Procedures

  • Determination and logic of testing sequence
  • Individual test description and demonstrations

On-machine Measurement

  • Volumetric measurement performance
  • Measurement strategies
  • Comparative measurement techniques
  • On-machine probing

Usage of Information from Tests

  • Creating specifications - builder and user
  • Error budgeting
  • Applications to ANSI (B5.54) & ISO (230) Standards
  • Analysis
  • Error corrections
  • Historical record keeping



MTM 101 Agenda