Correct option is B
A
Vernier height gauge is a precision measuring instrument used to measure vertical distances or mark components with high accuracy.
Accuracy:
The accuracy of a Vernier height gauge is determined by its
least count, which is the smallest measurement it can accurately read.
Typically, the least count of a Vernier height gauge is
0.02 mm, making this its accuracy.
Other Options:
0.01 mm: This is the least count for instruments like micrometers, not a Vernier height gauge.
