Which instrument is best for measuring the diameter of a thin wire?

A positive zero error in Vernier callipers makes the observed reading:

The main scale of a typical micrometer is marked in intervals of:

A Vernier main-scale reading is 2.5 cm and the coinciding division is 7. If least count is 0.01 cm, the reading is:

A micrometer with 1 mm pitch and 100 circular divisions has least count:

Which jaws of Vernier callipers measure the external diameter of a sphere?

If a micrometer's circular-scale zero is below the reference line when closed, its zero error is:

If one main-scale division is 1 mm and one Vernier division is 0.9 mm, the least count is:

Why is the thickness of 100 paper sheets measured together?

Ten Vernier divisions occupy 9 mm. The length of one Vernier division is:

Which balance can measure mass of the order of 0.1 mg?