Screw Gauge is an instrument used to measure the dimensions of very small objects upto ______.

0.1 c m

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0.01 c m

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0.1 m m

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0.01 m m

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Solution

The correct option is B $0.01 m m$
A screw gauge has $l e a s t$ count equal to $0.001 c m = 0.01 m m$
so dimensions of small objects can be measured $e a s i l y$ with a screw gauge with an $a c c u r a c y$ to the $two places on decimal in millimeter.$
In other words the $s m a l l e s t$ dimension which can be measured $a c c u r a t e l y$ with a screw gauge is $0.01 m m$

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