The document discusses lettering techniques for technical drawings. It describes the essential features of lettering as being legibility, uniformity, and suitability for reproduction processes. Letters should be clearly distinguishable from each other to avoid confusion. Guidelines are provided for letter dimensions and types, including that vertical capital letters are preferred for technical work. Basic drawing strokes and their directions in lettering are identified. The document also briefly discusses drawing scales for representing actual object sizes on paper.

1. MANZOOR ALI RAHIMOON

2. 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

4. 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.

5. LETTERING TECHNIQUE
LETTERING 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.

6. LETTERING TECHNIQUE
The following specifications
are given for the dimensions
of letters and numerals:

7. LETTERING TECHNIQUE
The lettering may be
inclined at 15° to the
right, or may be
vertical.
It is vertical lettering

8. LETTERING TECHNIQUE
The lettering
may be inclined
at 15° to the
right, or may be
vertical.
It is inclined
lettering

9. 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.

10. LETTERING TECHNIQUE
Vertical capital letters are preferred for most technical work.
They are formed within a 6 by 6 grid.

11. LETTERING TECHNIQUE

12. 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.

13. 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