A huge shout-out to Zack Jiskra and Halina Roszkowski for completing
Geometric dimensioning and tolerancing (GD&T) certifications.

Geometric Dimensioning and Tolerancing (GD&T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer-generated three-dimensional solid models that explicitly describe nominal geometry and its allowable variation. It tells the manufacturing staff and machines what degree of accuracy and precision is needed on each controlled feature of the part.

GD&T is used to define the nominal (theoretically perfect) geometry of parts and assemblies, to define the allowable variation in form and possible size of individual features, and to define the allowable variation between features.

Zack Jiskra – Project Engineer
Advanced GD&T Certification

Zack participated in this course as it was intended for experienced users of concepts of ASME-Y14.5-2009 standard. Designed to cover the more advanced applications of geometric dimensioning and tolerancing, participants will leave the course with an understanding of how to apply the principals as well as a deeper understanding of GD&T benefits.

Improve efficiency through appreciation of the concept of inspection-oriented tolerancing, testable datums, and a true cost of undue constrains placed on the geometric aspects of design.

Reduce time wasted by engineers, manufacturers, and inspectors by increasing their awareness of downfalls of using incomplete drawings or drawings with incorrectly applied GD&T. This advanced course is aimed to provide a solid understanding of datum selection, tolerances zones and application of advanced geometric tolerancing theory.

Halina Roszkowski – Inspections
Fundamentals of GD&T Certification

This GD&T training class is a basic, practical, & straightforward approach to geometric tolerancing and conforms to the Standard ASME Y14.5M-2009. In this program, the focus is on the “what, when, why, and how” of GD&T. The main objective was to bring Roszkowski to a common, basic, and operational level of understanding.


Our Quality Assurance & Reverse Engineering team has been effectively trained on how GD&T controls the functions of complex designs and ability to communicate geometric tolerances appropriately on their own prints.

  • Datum Reference Frames – Datum selection and what it means for manufacturing and inspection
  • The applications of position tolerance are explained in detail including fixed and floating fastener formulas.
  • Composite and Multiple Single Segment Profile Tolerancing

This GD&T class benefits our team in many different ways, says Sam Viana, Quality & Engineering Manager at Mechanical Power. Our day-to-day tasks include; design, reverse engineering and inspection of industrial component we source for our clients.  

Why Investing in employee training and development is a priority?

At Mechanical Power, ongoing training is considered an important investment. Our team gets the chance to develop skills, learn new ones, and get better in their field. Investing in employee training and development has always been a priority for us. New acquired sills can be utilized in manufacturing, quality assurance and reverse engineering.

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Daniel Szwed - Marketing Manager

Daniel Szwed

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