BEVEL PROTRACTOR LEAST COUNT PDF

Circular Plate with graduated vernier scale divisions. Acute angle attachment The following figure shows the vernier bevel protractor The base plate Stock consisting of the Working edge will be mounted on the Main body. And the Acute angle attachment is also mounted on the main body. A circular plate having a vernier scale in it, also mounted on the Main body frame. The circular plate can rotate freely on the main body. There is a slow-motion device which helps to control the rotation of the circular plate on the main body.

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Circular Plate with graduated vernier scale divisions. Acute angle attachment The following figure shows the vernier bevel protractor The base plate Stock consisting of the Working edge will be mounted on the Main body. And the Acute angle attachment is also mounted on the main body. A circular plate having a vernier scale in it, also mounted on the Main body frame. The circular plate can rotate freely on the main body.

There is a slow-motion device which helps to control the rotation of the circular plate on the main body. This Adjustment Blade can be rotated along with the circular plate on the main body.

Which means the vernier scale on the circular plate will be rotated on the Main scale which is graduated on the Main body as shown in below. The Vernier scale has 12 divisions on each side of the centre zero. It means there are 24 divisions on the vernier scale 5. While taking a measurement, The Zero line on the vernier scale shows the reading on the main scale, called main scale reading.

At somewhere The divisions on the vernier scale will coincide with the divisions on the Main scale. With these values along with the least count of the Vernier bevel protractor, we can calculate the Reading. Let us know your thoughts in the comments section below if we have to cover anything in here!

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Bevel protractor[ edit ] A bevel protractor is a graduated circular protractor with one pivoted arm; used for measuring or marking off angles. Sometimes Vernier scales are attached to give more precise readings. It has wide application in architectural and mechanical drawing, although its use is decreasing with the availability of modern drawing software or CAD. Universal bevel protractors are also used by toolmakers; as they measure angles by mechanical contact they are classed as mechanical protractors.

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Marking and marking tools Vernier bevel protractor The bevel protractor is used to establish and test angles to very close tolerances. A circle can be divided into equal angles. Each angle is called degree. So a circle is degrees o.

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