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Question

Draw a neat and labelled diagram of a screw gauge. Name its main parts and state their functions.


Solution

selina-icse-solutions-class-9-physics-measurements-experimentation-ex1b-16s

Main parts and their functions:

  1. Ratchet:It advances the screw by turning it until the object is gently held between the stud and spindle of screw.
  2. Sleeve:It marks the main scale and base line.
  3. Thimble:It marks the circular scale.
  4. Main scale:It helps to read the length correct up to 1 mm.
  5. Circular scale:It helps to read length correct up to 0.01 mm.

Physics
Concise Physics
Standard IX

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