Geometrical Tolerancing and Inspection





Offered by

Mechanical Engineering




The requirements for participating in this course is CAD knowledge on the level of ME-CAD1. It is also required, that the participant has a basic knowledge to drawing standards

Main purpose

The main purpose of the course is to provide the student with the deep knowledge of GDT (-also called GPS) Geometrical Tolerancing and the physical inspection of GDT data. It is also the purpose to gain knowledge inside handling polygon data from scanning.


After the course, the student has the knowledge of
o Scanning (Blue Light Scanning) technology
o Manipulating and fixing  polygon models (– smoothing, close holes, split and separate)
o NURBS surface Technology on scanned data
o Link between NURBS created and CAD models
o Alignment of scanned polygon model against master CAD data
o Measuring differences between the CAD and scanned data according to given tolerances
o A deep theoretical and practical knowledge to the GDT geometrical tolerancing system( Position, Direction and Form)
o Practical Inspection of  tolerances and GDT values
o Different alignment methods and awareness off the difference in the used method
o Process control regarding specific tolerances and GDT values
o SPC and Process Control (Cp and Cpk values)


Following completion of the course the student has skills in:
- Reverse Engineer “from scan to CAD” 
- Theoretical and practical professional skills inside the GDT Geometrical Dimension Tolerance system
- Understand and select relevant Geometrical Tolerances in a Datum Reference system
- Understand and select the proper alignment method. 
- Experience with scanned data as Polygon data (STL) and the handling of these data.


The student get the competencies to understand, specify and evaluate Reverse Engineering and Inspection activities in a modern manufacturing environment


Teaching methods and study activities

Class room teaching of course topics combined with practice exercises. The student is expected to make mandatory practice exercises and homework between lessons. 
3 lessons per week for 14 weeks and the expected workload for students is 138 hours.
The student is required to install a free version of the Inspection and Reverse Engineering software Poly-works on the student’s own Windows laptop.
The final course assignment is done in groups and covers all the course topics.
Study activity model
Category 1, Initiated by the lecturer with the participation of lecturer and students: 42 hours – 30%
Category 2: Initiated by lecturer with participation of students: 76 hours – 55 %
Category 3: Initiated by students with participation of students: 21 hours – 15 %
Category 4: Initiated by students with the participation of lecturer and students: 0 hours – 0%


Henrik S Nielsen: “ The ISO Specifications Handbook
Handed out PDF material
Youtube tutorials




Requirements for attending examination
Mandatory assignments handed in before deadline and accepted
Course assignment handed in before deadline
Test(s) during the course passed
Type of examination:
The evaluation is divided in 2 stages. The first stage (counting 40%) is a 2 hours test in the usage and understanding of GDT tolerances, Inspection and Reverse Engineering software. The second stage (counting 60%) is the evaluation of the final course assignment made in groups of 2-3 students.
Censor: None

Allowed tools:
Please note that the school can decide that the re-examination can be oral.

Grading criteria


Additional information



Kim Rask Petersen

Valid from

8/1/2019 12:00:00 AM

Course type

Mechanical Engineering Classic