Question

What is the instrument used to detect zero error?

Answer 1

Instrument error. Instrument error refers to the combined accuracy and precision of a measuring instrument, or the difference between the actual value and the value indicated by the instrument (error). Measuringinstruments are usually calibrated on some regular frequency against a standard

Answer 2

on bringing the movable jaw in contact with the fixed jaw of the vernier calipers
the zero mark of the vernier scale should coincide with the zero mark of the main scale .


in this position the 10th division of the vernier calipers coincides with the ninth division of the main scale .

if it is so the vernier is said to be free from zero error .

the zero error is equal to the length between the zero mark of the main scale and the zero mark of the vernier scale .

it is necessary to account for this error for a correct or through measurement from this instrument
.




there are two kinds of errors
positive zero error and negative zero error

if on bringing the two jaws together zero mark of the vernier scale is on the right of the zero mark of the main scale, the zero error is said to be positive
and if the zero mark of the vernier scale is to the left of the zero mark of the main scale the zero error is said to be negative



hope it helps