Question

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

  • Measurement Class 9 ICSE
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Answer

Below is the diagram of a screw gauge with all its parts labelled:

Draw a neat and labelled diagram of a screw gauge

The main parts and their functions of a screw gauge are as follows —

Part Function
Ratchet To advance the screw by turning it till the object is gently held between the stud and the spindle of the screw.
Sleeve To mark the main scale and baseline.
Thimble To mark circular scale.
Main scale To read length correct up to 1 mm.
Circular scale Helps to read length correctly to 0.01 mm.

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