Page 12 - ENGINEERING DRAWING

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1.2 Standard in technical drawing

i. Paper size

Drawing Dimension (Length X
Sheet Type Width) (mm)
A0 841 X 1189

A1 594 X 841

A2 420 X 594
A3 297 X 420
A4 210 X 297

A5 148 X 210

ii. Scale

Scale is used to reduce a large object or enlarge a small object according to the size of the
drawing paper while drawing.

The following are the scale rates according to the BS (British Standard) standard:

Category Recommended scales

Enlarged scales 50:1 20:1 10:1
5:1 2:1

Full size 1:1

Reduced scales 1:2 1:5 1:10
1:20 1:50 1:100
1:200 1:500 1:1000
1:2000 1:5000 1:10000