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प्रश्न
Draw a neat and labelled diagram of a screw gauge.
Name its main parts and state their functions.
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
Describe the procedure to measure the diameter of a wire with the help of a screw gauge.
A screw has a pitch equal to 0.5 mm. What should be the number of divisions on its head so as to read correctly up to 0.001 mm with its help?
Define the term least count as applied to a vernier callipers.
State the correction if the negative error is 7 divisions when the least count is 0.01 cm.
A measuring cylinder is filled with water up to a level of 30 ml. A solid body is immersed in it so that the level of water rises to 37 ml. Now the solid body is tied with a cork and then immersed in water so that the water level rises to 40 ml. Find the volume of the solid body and the cork.
Name the measuring employed to measure the diameter of a needle.
What is the least count in the case of the following instrument?
vernier calipers
Define the least count of an instrument.
