Engineering Graphics: Unit I (b): Scales
Scale and its Types
Engineering Graphics (EG)
The proportion by which all the dimensions of an object are either enlarged (or) reduced suitably for the convenience and clear representation to be shown on a drawing sheet is known as `drawing to scale' (or) simply 'scale'.
SCALE AND ITS TYPES The proportion by which all the dimensions of an object are either enlarged (or) reduced suitably for the convenience and clear representation to be shown on a drawing sheet is known as `drawing to scale' (or) simply 'scale'. It generally relates the drawing size to actual size of an object. Based on the proportion of drawing size to actual size. ie., Drawing size : Actual size, the scale is generally classified into three types as i) Full size scale ii) Reduced scale, and iii) Enlarged scale (i) Full size scale : The scale in which the actual measurements of the object are drawn is known as Full size scale. In Full size scale the drawing size and the actual size are equal. ie., Drawing size : Actual size = 1:1 (ii) Reduced scale : The scale in which the actual measurements of the object are reduced to some proportion is known as reduced scale. ie., In reduced scale, the drawing size is less than the actual size. Example : Drawing size : Actual size = 1 : 2, ie., The actual size is two times of the drawing size, or drawing size is made to Half of the actual size. (iii) Enlarged scale : The scale in which the actual measurements of the object are enlarged to some proportion is known as enlarged scale. ie., in enlarged scale, the drawing size is greater than the actual size. Example : Drawing size : Actual size = 2:1, ie., The actual size is half of the drawing size, or drawing size is made twice the actual size. To distinguish between the different types of scales an object which is drawn in actual, reduced and enlarged scale is shown below in Fig. 5.1. Note : While drawing an object in either enlarged or reduced scale, the dimensions are enlarged or reduced accordingly. But while dimensioning the object only the actual measurements are to be marked in the drawing irrespective of their drawing size.
Engineering Graphics: Unit I (b): Scales : Tag: : Engineering Graphics (EG) - Scale and its Types
Engineering Graphics: Unit I (b): Scales
Under Subject
Engineering Graphics
GE3251 eg 2nd semester | 2021 Regulation | 2nd Semester Common to all Dept 2021 Regulation
Related Subjects
Professional English II
HS3251 2nd Semester 2021 Regulation | 2nd Semester Common to all Dept 2021 Regulation
Statistics and Numerical Methods
MA3251 2nd Semester 2021 Regulation M2 Engineering Mathematics 2 | 2nd Semester Common to all Dept 2021 Regulation
Engineering Graphics
GE3251 eg 2nd semester | 2021 Regulation | 2nd Semester Common to all Dept 2021 Regulation
Physics for Electrical Engineering
PH3202 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation
Basic Civil and Mechanical Engineering
BE3255 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation
Electric Circuit Analysis
EE3251 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation
Physics for Electronics Engineering
PH3254 - Physics II - 2nd Semester - ECE Department - 2021 Regulation | 2nd Semester ECE Dept 2021 Regulation
Electrical and Instrumentation Engineering
BE3254 - 2nd Semester - ECE Dept - 2021 Regulation | 2nd Semester ECE Dept 2021 Regulation
Circuit Analysis
EC3251 - 2nd Semester - ECE Dept - 2021 Regulation | 2nd Semester ECE Dept 2021 Regulation
Materials Science
PH3251 2nd semester Mechanical Dept | 2021 Regulation | 2nd Semester Mechanical Dept 2021 Regulation
Basic Electrical and Electronics Engineering
BE3251 2nd semester Mechanical Dept | 2021 Regulation | 2nd Semester Mechanical Dept 2021 Regulation
Physics for Civil Engineering
PH3201 2021 Regulation | 2nd Semester Civil Dept 2021 Regulation
Basic Electrical, Electronics and Instrumentation Engineering
BE3252 2021 Regulation | 2nd Semester Civil Dept 2021 Regulation
Physics for Information Science
PH3256 2nd Semester CSE Dept | 2021 Regulation | 2nd Semester CSE Dept 2021 Regulation
Basic Electrical and Electronics Engineering
BE3251 2nd Semester CSE Dept 2021 | Regulation | 2nd Semester CSE Dept 2021 Regulation
Programming in C
CS3251 2nd Semester CSE Dept 2021 | Regulation | 2nd Semester CSE Dept 2021 Regulation