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Question
Which of the following measures a small length to high accuracy : metre rule , vernier callipers or screw gauge?
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Solution
Screw gauge measures a length to a high accuracy.
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RELATED QUESTIONS
The pitch of a screw gauge is 1 mm and the circular scale has 100 divisions. In measurement of the diameter of a wire, the main scale reads 2 mm and 45th mark on the circular scale coincides with the base line. Find
(i) The least count and
(ii) The diameter of the wire.
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.
Find:
(i) Pitch of the screw gauge,
(ii) Least count of the screw gauge and
(iii) The diameter of the wire.
When does a vernier callipers has the positive error?
What do you understand by the following term as applied to micrometre screw gauge?
Sleeve cylinder
