Question

How to find zero error in vernier calliper?

Answer 1

there is two type of ERROR in vernier scale positive and negative

Method to find zero ERROR be
1)first find it's MAIN scale reading
2)Then find it's Vernier scale reading


Then use this formula to find ERROR


MSR-VSR

EXAMPLE-main scale reading of any object be 3cm
and it interact with 3 division from MAIN scales 0
then the zero ERROR be:
MsR - 3cm
VSR-3VSD(vernier scale division)

then use the for mula to find zero ERROR

3×MSD-3VSD mm
3×(MSD-VSD) mm
3×(1.0-0.9)
0.3 mm

Answer 2

When the jaws of Vernier callipers are closed and is at its initial position and it still shows negative reading rather than giving actual reading of 0.00mm, this is termed as negative error. It is an indication that a measuring system gives a wrong reading when the true value of a measured quantity is zero, for example in a laboratory a voltmeter shows certain quantity of voltage even though no supply is given to it.