The document discusses various topics in engineering drawing and graphics. It covers line types, order of priority for coinciding lines, termination of leader lines, lettering techniques including types and dimensions of letters, drawing scales including reduced and enlarged scales, and an overview of the syllabus which includes topics like orthographic projections, sections, surface development, isometric projections, sketching, and computer aided drawing.

1. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
ENGINEERING DRAWING
&
GRAPHICS

2. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
ASSEMBLY OF
PARTS

3. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES
Lines of different types and thicknesses are used for graphical representation of bjects.

4. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES
Lines of different types and thicknesses are used for graphical representation of Objects.

5. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES
Lines of different types and thicknesses are used for graphical representation of Objects.

6. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES
Lines of different types and thicknesses are used for graphical representation of Objects.

7. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES
Lines of different types and thicknesses are
used for graphical representation of
Objects.

8. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES
Lines of different types and thicknesses are used for graphical representation of Objects.

9. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES

10. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES

11. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES

12. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES

13. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LINE TYPES

14. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
ORDER OF PRIORITY OF COINCIDING
LINES
When two or more lines of different types coincide, the following order of
priority should be observed:
(i) Visible outlines and edges (Continuous thick lines, type A),
(ii) Hidden outlines and edges (Dashed line, type E or F),
(iii) Cutting planes (Chain thin, thick at ends and changes of cutting planes,
type H),
(iv) Centre lines and lines of symmetry (Chain thin line, type G),
(v) Centroid lines (Chain thin double dashed line, type K),
(vi) Projection lines (Continuous thin line, type B).
The invisible line technique and axis representation should be followed as
per the recommendations.

15. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
ORDER OF PRIORITY OF COINCIDING
LINES

16. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
ORDER OF PRIORITY OF COINCIDING
LINES

17. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
ORDER OF PRIORITY OF COINCIDING
LINES

18. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
ORDER OF PRIORITY OF COINCIDING
LINES

19. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
TERMINATION OF LEADER LINES
A leader is a line referring to a feature (dimension, object, outline, etc.).
Leader lines should terminate,
(a) with a dot, if they end within the outlines of an object,
(b) with an arrow head, if they end on the outline of an object,
(c) without dot or arrow head, if they end on a dimension line.

20. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
MACHINE DRAWING EXAMPLE

21. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
HOW TO START
DRAWING•1. Select Starting point of the drawing.
•2.

22. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
DRAW CALIPER

23. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
DRAW HANGER

24. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
DRAW SPANNER

25. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUE• Writing of titles, sub-titles, dimensions, scales and other details
on a drawing.
• Essential features of lettering – legibility, uniformity, ease,
rapidity, and suitability for microfilming/ photocopying/any other
photographic processes
• No ornamental/decorative and embellishing/enlarging style of
letter.
• Plain letters and numerals which are clearly distinguishable from
each other in order to avoid any confusion even in case of slight
mutilations

26. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER

27. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUE•The essential features of lettering on technical drawings are,
legibility, uniformity and suitability for microfilming and other
photographic reproductions.
•In order to meet these requirements, the characters are to be
clearly distinguishable from each other in order to avoid any
confusion between them, even in the case of slight mutilations.
•The reproductions require the distance between two adjacent lines
or the space between letters to be at least equal to twice the line
thickness.
•The line thickness for lower case and capital letters shall be the
same in order to facilitate lettering.

28. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUELETTERING TYPES
• Lettering A – Height of the capital letter is divided into 14 equal
parts
• Lettering B – Height of the capital letter is divided into 10 equal
parts
Your lettering must have the same height, style, and size.
Lettering is an art that you must practice to obtain proficiency and
continue practicing to maintain proficiency.
Guidelines serve as an aid to creating uniform lettering.

29. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUEThe following specifications
are given for the dimensions
of letters and numerals:

30. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUEThe lettering may be
inclined at 15° to the
right, or may be vertical.
It is vertical lettering

31. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUEThe lettering may
be inclined at 15°
to the right, or
may be vertical.
It is inclined
lettering

32. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUE•Vertical capital letters are preferred for most technical work.
•There are six fundamental drawing strokes and their directions in
basic lettering.
•1- Vertical strokes are drawn from top to
bottom.
•2- Horizontal strokes are drawn from left to
right,
•3- Left Vertical strokes are drawn from top to
bottom.
•4- Right Vertical strokes are drawn from top to
bottom.
•5- Counter clockwise Curved strokes are drawn
downward.
•6- Clockwise Curved strokes are drawn
downward.

33. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUEVertical capital letters are preferred for most technical
work. They are formed within a 6 by 6 grid.

34. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
LETTERING
TECHNIQUE

35. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
DRAWING SCALE•Drawing scale is the reduction or enlargement of the drawn object
relative to the real object. Reduced and Enlarged Scale.
•Many drawings must be shown at reduced scale for the object to
fit on the paper.

36. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
DRAWING SCALE•For a part that is shown on the paper at half its actual size, the
scale is listed in one of these three ways:
1- SCALE: 1:2
2- SCALE: 1/2
3- SCALE: .5

37. MEHRAN UNIVERSITY
OF ENGINEERING & TECHNOLOGY, JAMSHORO
B.E MECHANICAL ENGINEERING
BATCH-F16, 1ST
YEAR,1ST
SEMESTER
SYLLABUS
• Introduction & Basics: Introduction to graphic language, Essential drawing
instruments and their correct use. Line types and lettering. Basic drafting techniques
and standards. Curves used in engineering.
• Orthographic Projections:
• Orthographic multi view projection of some simple and composite solids.
• Sections: Sectioning and projection of auxiliary views.
• Surface Development: Surface development of simple solids such as cylinder, cone,
prism and pyramid, surface development of intersecting solids.
• Isometric Projections: Isometric projection / drawings of piping.
• Freehand/Sketching : Sketching and basic rules of sketching.
• Detail, assembly and Working Drawings: Preparing detail, assembly and working
drawings of various machine and engine parts such as, keys, cotters, foundation bolts,
screws, pulleys, couplings, bearings riveted joints and nut and bolts. Fundamentals of
geometric dimensioning and tolerancing.
• Computer Aided Drawing: Computer aided drafting (CAD). Auto CAD Software