Free Hand Lettering and Numbers & BASIC ENGINEERING DRAWING & Department of Technical Education State Board of Technical Education &Training (TS)

1. Unit-2
BY

2. Freehand lettering& numbering
INTRODUCTION
Technical Lettering is an impotent part of engineering drawing.
It gives information regarding size, and instructions, in the form of
notes and dimension.
On a drawing, whole of the written information is
always in the form of lettering. It is not hand written. Also, it may
be added here, that Lettering is appropriate and correct words but
not printing (Printing means production of printed material on a
printing press)

3. Lettering
The writing of alphabets and numerals such as A, B, C, D…………………….Z and
1, 2, 3……………9, 0 respectively is called Lettering.
Mainly, there are two types of lettering most commonly used in engineering
drawing viz. Gothic Lettering and Roman Lettering.
Classification Of Lettering
The lettering, in general, is classified in two categories :-
1.Gethic Lettering
2.Roman Lettering.
Gethic Lettering
Lettering having all the alphabets or numerals of uniform thickness is
called Gothic Lettering.
1.Vertical Gothic Lettering
2.Italic or Inclined Gothic Lettering.

4. Single Stroke Vertical Gothic Lettering
These are vertical letter having thickness of each line of alphabet
or numerals etc. Same as the single stroke of a pencil.Since
Stroke means that the letter is written with one or more stems
or curves and each made with single stroke.
Single Stroke Inclined Gothic Lettering
These are single stroke letter inclined at 75' to the Horizontal.

5. Roman Lettering
The lettering in which all the letters are formed by thick and thin
elements is called Roman Lettering.
It may be vertical or inclined or inclined. It can be written with a
chisel pointed Pencil or D-3 type Speed Ball Pen

6. Free Hand Lettering
The writing of alphabets without the use of drawing
instruments and in free hand is called Free Hand
Lettering.
It may be vertical or Inclined Gothic Lettering

7. Height Of Lettering
The height "h" of the capital letter is taken as the base of
dimensioning.
The main requirement of lettering on engineering drawing are
legibility, uniformity, ease and rapidity in execution.
Both upright and inclined letter are suitable for general use.
All letters should be capital, except where lower case letters are
accepted internationally for abbreviations.
The recommended size of lettering is as under

8. Guide Lines
The light thin lines drawn to obtain uniform and correct height of letters are
called Guide Lines.
Guide line should be drawn very light and thin, so that, they need not be
erased after the lettering is finished. To erase guide lines after finishing the
lettering is not easily possible. Guide line for capital and lower case lettering.

9. How To Draw Graph For Lettering
The letters are drawn in a graph. Before drawing the alphabets
or numerals of 7:4, 5:4 or any other ratio, a graph is needed.
First of all take the height of the lettering and draw two parallel
horizontal lines.

10. Stencilling
Stencilling produces an image or pattern by applying pigment to
a surface under an intermediate object with designed gaps in it
which create the pattern or image by only allowing the pigment
to reach some parts of the surface. The stencil is both the
resulting image or pattern and the intermediate object; the
context in which stencil is used makes clear which meaning is
intended. In practice, the (object) stencil is usually a thin sheet of
material, such as paper, plastic, wood or metal, with letters or a
design cut from it, used to produce the letters or design on an
underlying surface by applying pigment through the cut-out
holes in the material.

12. HOME WORK
1.Write ” PRINCETON INSTITUTE OF
ENGINEERING AND TECHNOLOGY
FOR WOMEN-574” using sloping(75
degree) lettering of 7mm, 14mm height
2.Write STATE BOARD OF TECHNICAL
EDUCATION AND TRAINING
TELANGANA using vertical lettering of
10mm height

13. https://edengdrawing.blogspot.com/2
013/02/technical-lettering.html