Textbook of Engineering Drawing, Second Edition

____ Lettering and Dimensioning Practices, 2.25 4CMd EXERCISE r SCM i LI--__ ----I T o o ~ SCM Fig. 2.48 f co '" + 25 ~ (^25) -+ ...

CHAPTER 3 Scales 3.1 Introduction It is not possible always to make drawings of an object to its actual size. If the actual line ...

3.2 Textbook of Enginnering Drawing------------------ 3.3 Representative Fraction The ratio of the dimension of the object shown ...

----------------------------------------------------Scru~ 3.3 1 Ifx is the drawing size required x = 5(1000)(100) x 20000 Theref ...

3.4 Textbook of Enginnering Drawing------------------ -'I 5.5m ;(1 if j t /, I I I I I I I I I I 10 5 o (^2 3 4 5) DECIMETRE RF= ...

---------------------------Scales 3.5 Problem 4: Construct a plain scale of convenient length to measure a distance of 1 cm and ...

3.6 Textbook of Enginnering Drawing 0 C 9 9' 8 7' 7 6 6' 5 5' 4 4' 3 3' 2 2' 1 A B Fig. 3.6 Principle of Diagonal Scale Thus, th ...

---------------------------SCales 3.7 22 1 RF = 440xl00 = 2000 As 187 m are required consider 200 m. 1 Therefore drawing size = ...

3.8 Textbook of Enginnering Drawing------------------ Draw a length of 20 cm and divide it into 10 equal parts. Each part repre ...

---------------------------Scales 3.9 3.4.3 Vernier Scales The vernier scale is a short auxiliary scale constructed along the pl ...

3.10 Textbook of Enginnering Drawing------------------ O.54+2.S=3.34lcm O.SSkm o 5 10 LENGTH OF THE SCALE 150 mm SCAlE:1:40000 F ...

--------------------------Scales 3.11 Draw a line of20 em length. Complete the rectangle of20 em x 0.5 em and divide it into 4 ...

3.12 Textbook of Enginnering Drawing------------------ EXERCISES Construct a plain scale of 1 :50 to measure a distance of 7 me ...

CHAPTER 4 Geometrical Constructions 4.1 Introduction Engineering drawing consists of a number of geometrical constructions. A fe ...

4.2 Textbook of Enginnering Drawing------------------ As the line is to be divided in the ratio 1:3:4 it has to be divided into ...

_____ GeometricaIContructions 4.3 D c 8 Fig. 4.4 To inscribe a regular polygon of any number of sides in a given circle. constr ...

4.4 Textbook of Enginnering Drawing------------------- loinA-B which is the length of the side of the required polygon. Set the ...

------------_____ GeometricaIContructions 4.5 A ...------f...-o''------. :J 8 Fig. 4.7 To circumscribe a hexagon on a given cir ...

4.6 Textbook of Enginnering Drawing------------------ 1 2 \ 1 \ A. ..---'---+---'----t' A B Fig. 4.9 3. Through 0, the point of ...

--------------------'---Geometrical Contructions 4.7 Fig. 4.11 Join B to second division Irrespective of the number of sides of ...