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State three uses of the vernier callipers.
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Define the term least count as applied to a vernier callipers.
A micrometre screw gauge having a positive zero error of 5 divisions is used to measure diameter of a wire, when reading on the main scale is 3rd division and the 48th circular scale division coincides with baseline. If the micrometer has 10 divisions to a centimetre on the main scale and 100 divisions on a circular scale, calculate
- Pitch of screw
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- Corrected diameter.
The Wavelength of a particular colour is 5400Å. Express it in nanometer and metre.
The following figure shows the reading of a vernier caliper used for measuring the thickness of a metal sheet.
(i) Find the least count of the instrument.
(ii) Calculate the thickness of the metal sheet.
The precision of vernier calipers is ______ mm.
