Types of Lines used in Engineering Graphics

Engineering graphics is subject full of lines. Not a single engineering drawing is possible without use of line types. There are different line types for different purposes. All the types of lines with its symbol and applications discussed here.

Prepare the table of Types of Lines used in Engineering Graphics as per given below.

TYPE

ILLUSTRATION

APPLICATION

A – CONTINUOUS THICK

    

VISIBLE OUTLINES.

B – CONTINUOUS THIN

 

DIMENSION LINES, LEADER LINES, EXTENSION LINES, CONSTRUCTION LINES OF ADJACENT PARTS, HATCHING AND REVOLVED SECTION.

C – CONTINUOUS THIN-   WAVY

 

IRREGULAR BOUNDARY LINES, SHORT BREAK LINES.

D – SHORT  DASHES  MEDIUM

 

HIDDEN OUTLINES & EDGES.

E – LONG CHAIN THIN

 

CENTRE LINES, LOCUS LINES, EXTREME POSITIONS OF THE MOVABLE PARTS SITUATED IN FRONT OF THE CUTTING PLANTS AND PITCH CIRCLES.

F – LONG CHAI N LINE THICH AT   ENDS  AND THIN  ELSEWHERE

 

CUTTING PLANE LINES.

G – LONG CHAIN THICK

 

TO INDICATE SURFACES WHICH ARE TO RECEIVE ADDITIONAL TREATMENT.

H – RULED LINE & SHORT ZIGZAG THIN.

 

LONG BREAK LINES.

 

 

Author: Vasim Machhar

An Engineering Drawing Geek. Working at Noble Group of Institutions, Junagadh as Head of Mechanical Engineering Department.

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