Geometric Dimensioning and Tolerancing

Geometric Dimensioning and Tolerancing has extensive use in automotive industries, has been identified as a required skill in the Quality System Requirement section of Automotive Industry Action Group’s (AIAG) new quality standard.

TS16949:2002 “Suppliers who design the activity should be qualified in the skill of Geometric Dimensioning and Tolerancing as appropriate.”

Geometric Dimensioning and Tolerancing

Course Objective

Understand and explain the standard requirements, philosophies, concepts, design and tolerance rules, convention, symbols

Understanding common mistakes and misconception in specifying and verifying GD&T requirements;

Apply GD&T rules, tolerances, symbols, modifiers in part and gage drawings to communicate precisely the part and function design requirements/intents, consistently throughout the product life-cycle;

Who Should Attend

Manufacturing Managers

Quality Engineers and Managers

New Product Development Managers

Suppliers Quality Assurance

Production Manager

Design Engineer

Management Representative

Benefits of Attending

GD&T can save considerable time, money and resources by having clear, concise and consistent communications throughout the entire product life-cycle cycle processes, by getting every personnel involved from product and process designs, prototyping, production, inspector, gage, and tool making to “read from the same page”. GD&T ensures that there is only one interpretation to any drawing as intended by the designer.

GD&T Facilitates an efficient means to communicate specific datum’s on a part.

It allows the use of round tolerance zones as opposed to square or rectangular tolerance zones are given by limit tolerancing methods for cylindrical features.

GD&T uses functional gages to determine part acceptance, which can in many cases reduce inspection time and reliance on highly skilled inspectors.

GD&T develops multiple sources of supply by providing a complete product definition with a single dimensional interpretation.

Workshop Agenda


Symbols, Features Control Frames, Rules of Dimensioning, Tolerance and Tolerance Expression,  Fundamental of Gauging, Material Condition

Form Tolerance Control :

Straightness, Flatness, Waviness, Circularity, Cylindricity. Practice / Case Study on Tolerance Control

Datum :

Datum Reference Frame, Datum Feature and Terms, Selecting a Datum, Symbols,

Datum Feature with form tolerance, Secondary and Tertiary Datum Rules Datum Precedence, Framework, Stepped Datum Feature, Partial Datum Feature Coplanar, Coaxial, Hole Pattern, Two Hole Reference,  Datum Target, Error Equalisation, Inclined Datum, Complex Surfaces

Orientation Control

Perpendicularity, Angularity, Parallelism, Tangent Plane, Orientation Control Summary.  Exercise / Case Study on Orientation Control

Profile Control

Profile Control Examples, Profile Control on Secondary  and Tertiary Datum,

Composite Profile Control , Multiple Profile Control, Boundary  Concept


Circular and Total Runout, Datum Error and Locator, Primary Datum Surface Exercise and Case Study on Runout

Location Control

Position Tolerance Theory, Gauging Formula, Tooling and Fixture, LMC, MMC, Concentricity, Concentricity and Datum Error, Symmetry

Paper Gauging

Multiple Hole Pattern, Positional Tolerancing, Exercise and Case Study

Control, Convention and Symbols

Dimension Origin Symbol, Hole Depth Dimensioning, Projected Tolerance Zone, Tapper and Slope, Spherical Feature, Statistical Tolerance Control, Virtual and Resultant Condition

Summary, Q&A and Conclusion

Training Deliverables

Feedback From Past Participants

“This training program has helped to take complete knowledge on manufacturing variations on the design”

“ Now we can design the products better from what we have learned from the training session”

“GD&T should be introduced in all manufacturing companies for better dimensioning and understanding”

“Reading and  interpreting an engineering drawing skill has improved”

Know Your Trainer


B tech from NIT Rourkela, PGDM  from IIM Calcutta with 14+ yrs of intensive experience in various sector. He is a certified coach for Manufacturing Management and System Development

He has helped companies turn-around by implementing Manufacturing Excellence through Lean, Statistical Quality Control, Six Sigma, Strategy Management

He is a passionate reader and have inclination to solve complex business problems within very short span of time.

@Tetrahedron Manufacturing Services Pvt Ltd

Phone : +91 7042140046         Email:

Social Share Buttons and Icons powered by Ultimatelysocial
× Let's Talk !