The value of each main-scale division of a Vernier bevel protract

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

A. 1° 55’

B. 5’

C. 1° 

D. <span class="math-tex">\((\frac{1}{2})°\)</span>

Please scroll down to see the correct answer and solution guide.

Right Answer is: B

SOLUTION

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°. It means the main-scale division of a Vernier bevel protractor is 5'.

  • 1 degree = 60 minutes.
  • A 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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