*The external had arrived, all the instruments kept hidden in cupboards till now came come out and displayed on the table. The examiner picked up Screw gage and asked me,
“What is this instrument?”
I said “it is Screw gauge, used for measuring pitch of screws, Sir!”
He opened one and asked me, “Can you tell me the TPI (threads per inch) of this gauge?”
I said, “4 TPI”
The examiner got annoyed and raised his voice “Did you memorize it before reaching here?”
“No Sir, it is written on the gauge itself.”
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