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Question
Name the instrument which has the least count
0.1 mm
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Solution
Vernier callipers
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RELATED QUESTIONS
A screw gauge has 50 divisions on its circular scale and its screw moves by 1 mm on turning it by two revolutions. When the flat end of the screw is in contact with the stud, the zero of the circular scale lies below the base line and 4th division of the circular scale is in line with the base line. Find
(i) The pitch,
(ii) The least count and
(iii) The zero error of the screw gauge
Fig., below shows the reading obtained while measuring the diameter of a wire with a screw gauge. The screw advances by 1 division on the main scale when circular head is rotated once.
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(iii) The diameter of the wire.
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Sleeve scale
What do you understand by the following term as applied to micrometre screw gauge?
Thimble
What do you understand by the following term as applied to screw gauge?
Zero error
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.
How will you measure the least count of vernier caliper?
