PAPER SIZES / A - SERIES/ Drawing Papers/GSM/: Explained in தமிழ் TAMIL

In this video, the following are discussed:
What is A and how it is derived
Different sizes in A series
How many sheets can be produced from base
Weight of Papers
Other than A series

[@user-wj6mf1po1s]

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[@Ssrentertainment9]

Length breadth mathi soldrinhala???

[@imcivilengineer]

Sir/Madam,
Thank you for your observation.. kindly let me know at which duration I have made that mistake.