You are welcome to the subject of Engineering Graphics. Though it is a new subject for us still we have studied a bit in our previous classes. Let us recall the simple geometrical constructions where we have drawn them without much caring about the thickness of lines etc. and written the steps of construction also. At this level of study we shall study geometrical constructions again but here we shall use proper lines to construct them and there is no need of writing steps of construction. We have studied systeme International & units (S.I.Units). These units are used throughout the world. Similarly, many languages are spoken in the world and different dialects are used for expression. We can understand few of them but not all of them. It will not be a surprising fact if we say that there is a language which is understood by a class of persons, known as ‘Engineers’ who speak the same dialects and understand each other very well. This is the universal language of Engineers known as ‘Engineering Graphics’. In Engineering Graphics we use different lines, symbols and conventions. Each line, symbol and convention has a definite purpose and sense to convey. Thus, we can say that Engineering Graphics is the language of Engineers. It is a graphic representation of thinking, planning and a language of every technical person who uses to communicate his ideas clearly to other technical persons. In the age of automation, Engineering Graphics has greatly developed. Without the fundamental knowledge of Graphics a student cannot succeed in Industry. There are many uses of Engineering Graphics in practical field, especially in modern industry. These Engineering Graphics are widely used in Mechanical, Electrical, Electronics, Automobiles, Marine, Aeronautical, Chemical, Computer and instrumentation industry etc. In Civil Engineering and Architecture, Graphics are used to draw top view and front view of buildings and structures. In this chapter we shall learn about the basics of this universal language of Engineers. In Engineering Graphics we make extensive use of various types of lines, symbols and conventions (standard symbols). We shall learn about the standard letters and Numerals. These letters and Numerals are very necessary for writing notes, dimensions and the information needed on Graphics. Lastly, we shall undertake some simple constructions on rectilinear figures such as angles, triangles, quadrilaterals and polygons. We will also learn about dimensioning as it is an important aspect of our subject ‘Engineering Graphics’. These methods dimensioning allows a standard shape and size of the product to be.

- You are welcome to the subject of Engineering Graphics. Though it is a new subject for us still we have studied a bit in our previous classes.
- You are welcome to the subject of Engineering Graphics. Though it is a new subject for us still we have studied a bit in our previous classes.
- You are welcome to the subject of Engineering Graphics. Though it is a new subject for us still we have studied a bit in our previous classes.

#### Q2.1 WHAT IS LINE?

You are welcome to the subject of Engineering Graphics. Though it is a new subject for us still we have studied a bit in our previous classes. Let us recall the simple geometrical constructions where we have drawn them without much caring about the thickness of lines etc. and written the steps of construction also. At this level of study we shall study geometrical constructions again but here we shall use proper lines to construct them and there is no need of writing steps of construction. We have studied systeme International & units (S.I.Units). These units are used throughout the world. Similarly, many languages are spoken in the world and different dialects are used for expression. We can understand few of them but not all of them. It will not be a surprising fact if we say that there is a language which is understood by a class of persons, known as ‘Engineers’ who speak the same dialects and understand each other very well. This is the universal language of Engineers known as ‘Engineering Graphics’. In Engineering Graphics we use different lines, symbols and conventions. Each line, symbol and convention has a definite purpose and sense to convey. Thus, we can say that Engineering Graphics is the language of Engineers. It is a graphic representation of thinking, planning and a language of every technical person who uses to communicate his ideas clearly to other technical persons. In the age of automation, Engineering Graphics has greatly developed. Without the fundamental knowledge of Graphics a student cannot succeed in Industry. There are many uses of Engineering Graphics in practical field, especially in modern industry. These Engineering Graphics are widely used in Mechanical, Electrical, Electronics, Automobiles, Marine, Aeronautical, Chemical, Computer and instrumentation industry etc. In Civil Engineering and Architecture, Graphics are used to draw top view and front view of buildings and structures. In this chapter we shall learn about the basics of this universal language of Engineers. In Engineering Graphics we make extensive use of various types of lines, symbols and conventions (standard symbols). We shall learn about the standard letters and Numerals. These letters and Numerals are very necessary for writing notes, dimensions and the information needed on Graphics. Lastly, we shall undertake some simple constructions on rectilinear figures such as angles, triangles, quadrilaterals and polygons. We will also learn about dimensioning as it is an important aspect of our subject ‘Engineering Graphics’. These methods dimensioning allows a standard shape and size of the product to be.

#### Q2.2

#### Q2.3

#### Q2.3

You are welcome to the subject of Engineering Graphics. Though it is a new subject for us still we have studied a bit in our previous classes. Let us recall the simple geometrical constructions where we have drawn them without much caring about the thickness of lines etc. and written the steps of construction also. At this level of study we shall study geometrical constructions again but here we shall use proper lines to construct them and there is no need of writing steps of construction. We have studied systeme International & units (S.I.Units). These units are used throughout the world. Similarly, many languages are spoken in the world and different dialects are used for expression. We can understand few of them but not all of them. It will not be a surprising fact if we say that there is a language which is understood by a class of persons, known as ‘Engineers’ who speak the same dialects and understand each other very well. This is the universal language of Engineers known as ‘Engineering Graphics’. In Engineering Graphics we use different lines, symbols and conventions. Each line, symbol and convention has a definite purpose and sense to convey. Thus, we can say that Engineering Graphics is the language of Engineers. It is a graphic representation of thinking, planning and a language of every technical person who uses to communicate his ideas clearly to other technical persons. In the age of automation, Engineering Graphics has greatly developed. Without the fundamental knowledge of Graphics a student cannot succeed in Industry. There are many uses of Engineering Graphics in practical field, especially in modern industry. These Engineering Graphics are widely used in Mechanical, Electrical, Electronics, Automobiles, Marine, Aeronautical, Chemical, Computer and instrumentation industry etc. In Civil Engineering and Architecture, Graphics are used to draw top view and front view of buildings and structures. In this chapter we shall learn about the basics of this universal language of Engineers. In Engineering Graphics we make extensive use of various types of lines, symbols and conventions (standard symbols). We shall learn about the standard letters and Numerals. These letters and Numerals are very necessary for writing notes, dimensions and the information needed on Graphics. Lastly, we shall undertake some simple constructions on rectilinear figures such as angles, triangles, quadrilaterals and polygons. We will also learn about dimensioning as it is an important aspect of our subject ‘Engineering Graphics’. These methods dimensioning allows a standard shape and size of the product to be.