Entrepreneurship, Module-1 - Practice Mode

Explanation:

<p>The vernier bevel protractor is a precision instrument meant for measuring angles to an accuracy of 5 minutes.<br /> The Least count of vernier bevel protractor is 5&#39; (Five Minutes)<br /> The value of each Vernier scale division of Vernier bevel protractor is 1 degree 55 minutes.<br /> To get the least count of 5 minutes (5&#39;) in a vernier bevel protractor the 23 degree main scale is divided into 12 equal parts on vernier scale.<br /> <br /> <strong>Following are the parts of a vernier bevel protractor.</strong><br /> <br /> <strong>Stock</strong>&nbsp;: &ndash; This is one of the contacting surfaces during the measurement of an angle. Preferably it should be kept in contact with the datum surface from which the angle is measured.<br /> <strong>Dial</strong>:&ndash; The dial is an integrated part of the stock. It is circular in shape, and the edge is graduated in degrees.<br /> <strong>Blade</strong>:- This is the other surface of the instrument that contacts the work during measurement. It is fixed to the dial with the help of the clamping lever. A parallel groove is provided in the centre of the blade to enable it to be longitudinally positioned whenever necessary.<br /> <strong>Locking Screws</strong>:- Two knurled locking screws are provided, one to lock the dial to the disc, and the other to lock the blade to the dial.</p>