The value of each main-scale division of a Vernier bevel protractor is:

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  1. 1° 55’
  2. 5’
  3. 1° 
  4. \((\frac{1}{2})°\)

Answer (Detailed Solution Below)

Option 3 : 1° 
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Detailed Solution

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Explanation:

  • The Vernier bevel protractor is a precision instrument meant for measuring angles to an accuracy of 5 minutes i.e. (1/12)° i.e. 12th part of 1°. 
  • The value of each main-scale division of a Vernier bevel protractor is 1° 

Important Points

  • 1 degree = 60 minutes.
  • micrometer may have a least count of 0.01 mm while a Vernier scale on caliper may have a least count of 0.02 mm.
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