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प्रश्न
State the purpose of ratchet in a screw gauge.
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उत्तर
Ratchet helps to advance the screw by turning it until the object is gently held between the stud and spindle of the screw.
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संबंधित प्रश्न
Define the term 'Vernier constant'.
Which of the following measures a small length to high accuracy : metre rule , vernier callipers or screw gauge?
Name the instrument which has the least count
0.1 mm
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
Who invented vernier callipers?
State the formula for calculating length if:
The reading of the main scale is known and the number of vernier scale divisions coinciding with the main scale is known.
The circular scale of a screw gauge has 100 divisions. Its spindle moves forward by 2.5 mm when given five complete turns. Calculate
- pitch
- least count of the screw gauge
The level of water in a measuring cylinder is 12.5 ml. When a stone is lowered in it, the volume is 21.0 ml. Find the volume of the stone.
Define the least count of an instrument.
