Question
What is vernier calliper? What are the factors on which its accuracy depends?
Solution
Vernier calliper is an instrument used to measure the small lengths/diameters/depths. Vernier calliper consists of two scales; one scale is ordinary centimeter scale, called main scale. The second scale called vernier scale can be slided on main scale.
The accuracy of measurement of vernier scale depends on the value of one division on vernier scale. The vernier scale is constructed so that it is spaced at a constant fraction of the fixed main scale. So for a decimal measuring device each mark on the vernier is spaced nine tenths of those on the main scale.
The accuracy of measurement of vernier scale depends on the value of one division on vernier scale. The vernier scale is constructed so that it is spaced at a constant fraction of the fixed main scale. So for a decimal measuring device each mark on the vernier is spaced nine tenths of those on the main scale.
