Read real production drawings
Most drawings from automotive and precision component companies carry GD&T callouts.
CADD Centre · Mechanical CADD
GD&T Course in Vellore, Katpadi & Ranipet
Learn to read and apply GD&T on engineering drawings – datums, symbols, feature control frames, fits and bonus tolerance.
1 level16 h36 topics3 centresClassroom · Online · Hybrid
01What is GD&T
What is GD&T? In plain words.
Geometric Dimensioning and Tolerancing (GD&T) is a symbolic language used on engineering drawings. It tells the machinist and the inspector exactly how much a feature's form, orientation, location and profile may vary, measured from clearly defined datums. The rules and symbols in this course follow the ASME Y14.5M-1994 standard, which is still widely used on drawings in Indian and global companies, along with its later revisions.
Plain plus-minus dimensions cannot always control how parts fit and work together. GD&T fixes this, so design, manufacturing and quality teams read one drawing the same way. Automotive, aerospace, machinery and precision component companies expect design engineers, CNC programmers and quality inspectors to understand feature control frames, MMC and LMC, and bonus tolerance. It is one of the most useful add-ons to any CAD skill.
Machining, fabrication and auto component units around Ranipet's SIPCOT estate and along the Chennai–Bengaluru corridor work to toleranced drawings every day. GD&T helps students and workers from Vellore, Katpadi and Ranipet move into design, quality and inspection roles.
What you will be able to do
- Explain why dimensional tolerance is needed and how it relates to manufacturing processes
- Express tolerances correctly and specify tolerances for assemblies
- Choose fits using hole-basis and shaft-basis systems, IT grades, allowance and clearance
- Apply GD&T Rule #1 and Rule #2 as defined in ASME Y14.5M-1994
- Work out maximum material condition, least material condition and virtual condition
- Calculate bonus tolerance for features of size
- Set up datum reference frames using datum features, simulators and targets
- Read every part of a feature control frame and all 14 geometric characteristic symbols
02Why learn it
Why learn GD&T now?
Six reasons students and professionals in Vellore district pick this skill.
Useful in design and quality
Designers, CNC programmers and inspectors all use GD&T every day.
Short, focused course
Just 16 hours, so it fits easily alongside college or work.
Better fits, fewer rejections
Understand hole and shaft systems, IT grades and fits so parts assemble as intended.
Adds weight to your CAD skills
SolidWorks, Creo, CATIA or Inventor designers who know GD&T produce drawings that are ready for manufacture.
Common interview topic
Datums, MMC, virtual condition and bonus tolerance are frequent questions in mechanical interviews.
03Who can learn
Who can join this course?
BE/BTech Mechanical and Production students
Understand the drawings you will see in industry.
Diploma and ITI Mechanical students
Read tolerances correctly on the shop floor.
CAD design engineers
Apply correct GD&T callouts on drawings you create.
Quality and inspection engineers
Interpret feature control frames for CMM and gauge inspection.
CNC programmers and machinists
Know which features and datums control your setup.
Manufacturing and supplier quality staff
Discuss drawings clearly with customers and vendors.
Before you start: Basic knowledge of engineering drawing and dimensioning is expected. Some exposure to machining or a CAD tool helps but is not required.
04Levels & syllabus
Every GD&T level, topic by topic.
1 programme on one page. Pick a level to see its modules and every topic covered.
Foundation level
Essential in GD&T
Engineers, designers and quality staff who want a compact 16-hour course to read and apply GD&T on drawings.
16 hours9 modules · 36 topicsCode EBCOSPM2212Certificate: CADD Centre network
9 modules · 36 topics
01Dimensions and Drawings2 topics
Review of dimensions on engineering drawingsDrawing workshops
02Size Tolerance8 topics
Windows philosophyMachining flowchartNecessity of dimensional toleranceTolerance dimensioningWays of expressing toleranceSpecifying tolerance for an assemblyTolerance versus manufacturing processDeviation
03Limits and Fits6 topics
Basic hole systemBasic shaft systemIT gradesFits between mating partsAllowanceClearance
04The GD&T System2 topics
Introduction to ASME Y14.5M-1994The three major benefits of geometric dimensioning and tolerancing
05GD&T Rules2 topics
Rule #1Rule #2
06GD&T Concepts3 topics
Maximum material condition (MMC) of a feature of sizeLeast material condition (LMC) of a feature of sizeConcept of virtual condition
07Bonus Tolerance2 topics
Concept of bonus toleranceCalculating bonus tolerance
08Planar Datums6 topics
Datum systemDatum featureDatum feature simulatorDatum feature symbolCoplanar datum featuresDatum targets
09Modifiers and Symbols5 topics
Five types of geometric characteristic symbols (form, orientation, location, profile, runout)The fourteen geometric characteristic symbolsCommon modifying symbolsParts of a feature control frameAdditional symbols used in geometric tolerancing
05Your next step
Where this course leads
This page offers one focused GD&T programme. It pairs well with any CAD course – take it alongside or after SolidWorks, Creo, CATIA or Inventor so your drawings carry correct tolerances.
Foundation
Course on · Essential · Certificate · SKEP · Executive DiplomaStart here. Core tools, workflow and a practice project.
Professional
Proficient · ProfessionalIndustry-style exercises, advanced features and a portfolio project.
Master
Advanced · Expert · MastersComplete programmes that combine several tools and a capstone project.
06Hands-on
Projects you will build
You learn by making real deliverables – reviewed by your trainer before certification.
Shaft and hole fit selection
Pick suitable fits for a bearing seat and a sliding shaft using hole- and shaft-basis tables.
Datum set-up for a bracket
Choose primary, secondary and tertiary datums for a machined bracket and mark them on the drawing.
Bonus tolerance worksheet
Calculate bonus tolerance for a positioned hole pattern at different actual sizes.
Drawing mark-up exercise
Add feature control frames for flatness, perpendicularity, position and profile to a part drawing.
Tools & features covered
ASME Y14.5M-1994 standardLimits, fits and IT gradesHole-basis and shaft-basis systemsFeature control framesDatum reference frames and datum targetsMMC, LMC and virtual conditionBonus tolerance calculationForm, orientation, location, profile and runout symbols
Talk to a counsellor about GD&T
Get the full syllabus PDF, current fee, offers and the next batch date on WhatsApp – usually within minutes during centre hours.
07Careers
Jobs you can apply for after GD&T
Roles that list this skill in Indian job postings.
Design Engineer
Adds correct GD&T to part and assembly drawings.
Quality Engineer
Checks parts against GD&T requirements and handles customer quality issues.
Quality Inspector / CMM Operator
Measures features against datums and tolerances.
Manufacturing / Process Engineer
Plans machining steps so parts meet drawing tolerances.
Supplier Quality Engineer
Reviews supplier parts and drawings for conformance.
CAD Detailer
Prepares fully toleranced drawings from 3D models.
Salary you can expect
Fresher0–2 years₹2–3.6 LPA
Experienced3–5 years₹4–7.5 LPA
Senior6+ years₹8–14 LPA
Indicative ranges for India; pay varies by company, city, skills and experience. GD&T is usually combined with a CAD or quality role. Figures in lakh per annum (LPA).
Industries that use it
Automotive and auto componentsAerospace and defencePrecision machiningIndustrial machineryHeavy engineeringPumps and valvesMedical devicesEngineering services
Companies that use these skills
Tata MotorsAshok LeylandTVS Motor CompanyHyundai Motor IndiaMahindra & MahindraBosch IndiaBHELHALLarsen & ToubroSundram FastenersWheels IndiaCaterpillar IndiaL&T Technology ServicesCyientTata Technologies
Examples of well-known companies and sectors in India that use these skills. They are not CareerKraft partners or recruiters.
Your career path
1
Graduate Engineer Trainee / Inspector
Reads drawings and checks parts under guidance.
2
Design or Quality Engineer
Applies GD&T on drawings or inspection plans independently.
3
Senior Engineer
Handles tolerance studies, customer drawing reviews and supplier issues.
4
Lead / Quality or Design Manager
Sets drawing and inspection standards for a team or plant.
Placements
Students placed from our centres
Naresh N
Knitwear Designer & Quality Checker
SGS India Pvt. Ltd, Bengaluru
Surendar S
Design Engineer, Assistant Engineer - Design
Hirise Drafting and Consulting Pvt. Ltd, Eversendai Construction Pvt. Ltd (ECPL), Chennai
Suresh K
CNC Lathe Programmer
Propel Valve Pvt. Ltd
Anish R
Design Engineer
New Auto Tech Pvt. Ltd
08How you learn
Classroom, online or both.
Same syllabus and certificate in every mode. Your counsellor confirms the mode based on trainer availability for your batch.
Classroom
Learn in our labs at Katpadi, Vellore or Ranipet with your trainer beside you and classmates to build with.
Online
Live sessions from home with the same syllabus, projects and certificate. Good if you cannot travel every day.
Hybrid
Lab days plus online sessions around college or work. The mode depends on trainer availability for your batch.
Certificate
On completing a level and its project assessment, you receive the course certificate of the CADD Centre network, issued through CareerKraft as the authorised training partner.
Batches & timings
Weekday, weekend and fast-track batches within centre hours (Mon–Sat 9:30 AM – 6:30 PM · Sun 9:00 AM – 2:00 PM). Ask for the next start date at your centre.
Fees & EMI
The fee depends on the level and mode. Your counsellor shares the current fee, offers and EMI options on WhatsApp.
Why learn at CareerKraft
Authorised partner training
Structured syllabi and certificates from the CADD Centre, Livewire and SynergySBS networks.
Learn by doing
Hands-on lab work and a project assessed before you are certified.
Personal attention
Industry-experienced trainers and batches small enough to ask questions.
Placement support
Resume help, mock interviews and job leads when you are ready – no false promises.
11Where to learn
Learn GD&T at any of 3 centres
Same syllabus, trainer standard and certificate at every centre. Tap the centre you want.
GD&T in Katpadi
Near Aascars Cinemas, Katpadi
CADD Centre Katpadi
GD&T in Vellore
Near Raja Theatre, Vellore
CADD Centre Vellore
GD&T in Ranipet
Near SBI, Muthukadai, Ranipet
CADD Centre Ranipet
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09FAQ
GD&T course – your questions answered
12 answers about levels, duration, eligibility, certificate, placement support and fees.
Still have a question? The counsellor at the centre you prefer replies on WhatsApp.
Ask on WhatsAppWhat is GD&T?
GD&T stands for Geometric Dimensioning and Tolerancing. It is a set of symbols and rules used on drawings to control the form, orientation, location and profile of features. This course follows the ASME Y14.5M-1994 standard.
Who should take the GD&T course?
Mechanical and production students, diploma and ITI holders, CAD designers, CNC programmers and quality inspectors benefit most. You should know basic engineering drawing and dimensioning.
How long is the course?
Essential in GD&T is 16 hours, with a theory session and a practice session for each topic.
Is there more than one level?
There is one GD&T programme on this page. It is usually taken along with or after a CAD course such as SolidWorks, Creo, CATIA or Inventor.
Can I attend online?
Yes. Classroom, online and hybrid modes are available, depending on trainer availability. Ask the centre which mode suits the next batch.
Is there a free demo?
Contact your chosen centre on WhatsApp or phone to ask about a demo or counselling session before you join.
Will I get a certificate?
Yes. After completing the course and assessment, you receive a certificate from CADD Centre, our training partner.
Do you offer placement support?
We offer placement support – resume help, mock interviews and job leads. No job is guaranteed; GD&T works best combined with a CAD or quality skill.
What does the course cost?
The counsellor at your chosen centre will share the current fee, any offers and EMI options on WhatsApp.
Do I need a laptop?
No. GD&T is mostly drawing interpretation and worked exercises, and the centre provides what you need. A notebook and calculator are useful.
How does GD&T help my job prospects?
It makes you more useful in design, quality, inspection and manufacturing roles, where drawings carry GD&T. Freshers in these roles typically start around ₹2–3.6 LPA; pay depends on company, city and your main skill set.
Where are classes held and when?
GD&T runs at all three centres – Katpadi, Vellore and Ranipet. Timings are Monday to Saturday 9:30 am to 6:30 pm and Sunday 9:00 am to 2:00 pm.
10Keep exploring
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Start today
Get the GD&T syllabus, fees & batch dates
Fill this in and WhatsApp opens with your details, addressed to the centre you choose. The counsellor replies with the full syllabus, current fee, offers and the next batch.
- Free counselling and demo class
- Real projects and placement support
- Classroom, online or hybrid batches
- Replies Mon–Sat 9:30 AM – 6:30 PM · Sun 9:00 AM – 2:00 PM