This document provides information and guidelines for lettering used in engineering drawings. It discusses single stroke letters, including Type A and Type B styles, with Type B preferred for its division into 10 equal parts. Capital letters typically have a ratio of height to width of 10:6, while lower-case letters ratios vary depending on features. Numerals also have a standard ratio of 10:5. Spacing between characters is (2/10)h and between words is (6/10)h. A title block layout and sample capital and lowercase letters and numerals are shown.

1. B.Tech 1st year (ME)
• Lecture # 02
• Sheet 2.-Lettering

2. Introduction
Lettering is defined as writing of titles, sub-titles, dimensions, etc., on a
drawing.
Single Stroke Letters
The word single-stroke should not be taken to mean that the lettering
should be made in one stroke without lifting the pencil. It means that
the thickness of the letter should be uniform as if it is obtained in one
stroke of the pencil.

3. Types of Single Stroke Letters
1. Lettering Type A: (i) Vertical and (ii) Sloped
2. Lettering Type B : (i) Vertical and (ii) Sloped
In Type A, height of the capital letter is divided into 14 equal parts,
while in Type B, height of the capital letter is divided into 10 equal
parts. Type B is preferred for easy and fast execution, because of the
division of height into 10 equal parts.

4. CAPITAL LETTERS
• Ratio of height to width for most of the CAPITAL letters is
approximately = 10:6
• However, for M and W, the ratio = 10:8, for I the ratio = 10:2

5. Lower-case Letters
• Height of lower-case letters with stem/tail (b, d, f, g, h, j, k, I, p, q, t, y)
= h
• Ratio of height to width for lower-case letters with stem or tail = 10:5
• Height of lower-case letters without stem or tail is approximately =
(7/10) h
• Ratio of height to width for most lower-case letters without stem or
tail = 7: 5
• However, for m and w, the ratio = 7: 7. For I, the ratio = 10:2

6. Contd..
Numerals
• For numerals 0 to 9, the ratio of height to width = 10 : 5. For 1, ratio =
10 : 2
Spacing
• Spacing between characters = (2/10)h
• Spacing between words = (6/10)h

7. Mini-drafter fixed on a drawing table

8. Drawing sheet Layout
20 mm
10 mm
10 mm
10 mm
170 mm
65 mm TITLE BLOCK
DRAWING SPACE

9. Title Block
10mm
10mm
10 mm
10 mm
10 mm
15 mm
170 mm
85 mm 85 mm
NAME OF STUDENT
UNIVERSITY NAME
CLASS ROLL NO.
TITLE OF SHEET
DATE SCALE
TEACHER SIGN

10. Capital Letters

11. Small Letters

12. Numerals

13. Contd..
• MADAN MOHAN MALAVIYA UNIVERSITY OF TECHNOLOGY
• ENGINEERING GRAPHICS IS THE LANGUAGE OF ENGINEERS