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प्रश्न
Draw a neat and labelled diagram of a screw gauge.
Name its main parts and state their functions.
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उत्तर
Diagram of screw gauge:
Main parts and their functions:
- Ratchet:It advances the screw by turning it until the object is gently held between the stud and spindle of screw.
- Sleeve:It marks the main scale and base line.
- Thimble:It marks the circular scale.
- Main scale:It helps to read the length correct up to 1 mm.
- Circular scale:It helps to read length correct up to 0.01 mm.
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संबंधित प्रश्न
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Name the part of the vernier callipers which is used to measure the following
Depth of a small bottle
State the purpose of ratchet in a screw gauge.
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
State the formula for determining a pitch
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
What do you understand by the following term as applied to micrometre screw gauge?
Sleeve scale
What do you understand by the following term as applied to screw gauge?
Positive zero error
Explain the term least count of a screw gauge. How are they determined?
