Can vernier callipers be used to measure the thickness of a piece of paper?

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Solution

$Y e s v e r n i e r c a l l i p e r s c a n m e a s u r e t h e t h i c k n e s s o f p i e c e o f p a p e r a l s o . F o r t h i s c o u n t t h e t o t a l n u m b e r o f p i e c e s k e p t o v e r o n e a n o t h e r a n d t h e i r t h i c k n e s s b y t h e v e r t i c a l s t r i p p r o v i d e d i n t h e c a l l i p e r s . N o t e d o w n t h e r e a d i n g o f m a i n a n d v e r n i e r s c a l e, a d d t h e m a n d t h e n t h e r e a d i n g y o u g e t, d i v i d e i t b y n u m b e r o f p i e c e s t o g e t t h e t h i c k n e s s o f t h e \sin g l e p i e c e .$

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A boy uses a vernier callipers to measure the thickness of his pencil. He measures it to be 1.4 mm. If the zero error of vernier callipers is + 0.02 cm, what is the correct thickness of pencil ?

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