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Hands-On Expertise

We have a combined 75+ years of experience of teaching GD&T and related tools to thousands of students worldwide, and applying GD&T to thousands of drawings.

Our Strengths

Design for Lean Six Sigma

We have workshops that will help you combine your GD&T and tolerance stack methods with statistical and lean tools to help optimize design, manufacturing, quality, and productivity.  

Our Staff

GD&T Application and Tolerance Analysis

We can lay the foundation, and then take you to the next level with advance workshops focusing on inspection, applications to new designs, and advanced tolerance analysis.

(915) 867-4500

All ITR Instructors hold the

Senior GD&T Professional Certification

ASME Y14.5.2

John-Paul Belanger

Years of experience: 25+

Expertise: GD&T Fundamentals and Applications, Tolerance Stack Analysis, Failure Mode and Effects Analysis

ASME Senior GD&T Certified

John Stolter

Years of experience: 25+

Expertise: GD&T, Tolerance Analysis, Sheet Metal Forming and Die Design, Analytical Tools

ASME Senior GD&T Certified

- Tolerance Stack Up Analysis Training
- Geometric Dimensioning & Tolerancing (GD&T) Training
- Design for Manufacturing / Design for Assembly Training

- Design for Lean Six Sigma, APQP, FMEA, PPAP, SPC, MSA Training

- Root Cause Analysis & Problem Solving, Measurement & Gaging​ Training

​- AS9145, AS13000, AS13002, AS13003, AS13004 Training Workshops


"Helping you ask the right questions."™

Click to view Certificate Holders

Certified Six Sigma Master Black Belt

Dan Bauer

Years of experience: 25+

Expertise: GD&T Applications, Tolerance Stack Analysis, Design for Manufacturing and Assembly, Design for Lean Six Sigma

ASME Senior GD&T Certified

Six Sigma Master Black Belt Certified

ASME Certification

All our instructors hold the Senior Level GD&T Certification to ASME Y14.5.2, and have helped dozens of students obtain certification.