Hi, heres how you calculate least count of a micrometer. Use the given formula: Least Count (L. C) = Pitch/no. of divisions on micrometer barrel(thimble) where. The bevel protractor is used to establish and test angles to very close tolerances. The bevel protractor consists of a beam, graduated dial and blade which is Then count, in the same direction, the number of spaces from the zero on the. Apparatus: Surface plate, Bevel protractor, tapered workpiece. Objectives: To understand Observations: . Least count of bevel protractor is ______ minutes.

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Take a beveled mirror. It has wide application in architectural and mechanical drawing, although its use is decreasing with the availability of modern drawing software or CAD.


In no time at all you will be able to design and. The principle of optical scales has already been discussed in details in chapter 6.

When something is beveled, it is cut or finished “at a slant” to a reference plane. This is thought to be because early manufacturing methods couny the tone of future production. Most protractors are divided into equal parts.

Articles prktractor additional references from August All articles needing additional references Articles needing expert attention with no reason or talk parameter Articles needing unspecified expert attention Articles needing expert attention from January All articles needing expert attention Wikipedia articles needing clarification from January Commons category link is on Wikidata.


What is the uses of bevel protractor? The bevel protractor is used to establish and test angles to very close tolerances.

what is the least count of vernier bevel protractor

They are used for a variety of mechanical and engineering-related applications. What is the least count of bevel proctector? Angular Measurement and Circular Division Metrology.

It can be moved along the turret throughout protracror length and can also be reversed. The bevel protractors are tested for flatness, squareness, parallelism, straightness and angular intervals by suitable methods.

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The difference between types A and B is that type A is provided with fine adjustment device or acute angle attachment whereas type B is not. Teachers usually teach this skill sometime in 4th grade. A gon protractor marked in gradians.

This protractot was last edited on 18 Decemberat What is a protractor? Twenty four spaces on the Vernier scale equal in extreme length twenty three double degrees [ clarification needed ].

Unfortunately, the two number scales on a one-sided protractor often confuse learners when first learning to measure and draw angles.

Picture below illustrates a variety of uses of the bevel protractor. Least count of vernier? It can be clamped in any position.

Some protractors are simple half-discs. Read off directly from the main scale the number of whole degrees between 0 on this scale and the 0 of the Vernier scale.


Use of bevel protractor for checking of vee block. Multiplying 3 by 5, the product, 15, is the number of minutes to be added to the whole number of degrees, thus indicating a setting of 28 degrees and 15 minutes. Most circular table ciunt. Choose a video to embed. coount

Its working edge should be flat to within 0. A protractor is a geometric tool that is used to measure the degreeof angles. The scale and vernier are so arranged that they are always in focus in the optical system.

Universal Bevel Protractor Series

The bevel protractor consists of a beam, a graduated dial and a blade which is connected to a swivel plate with Vernier scale by thumb nut and clamp. Vernier and Optical Bevel Protractor Metrology. Views Read Edit View history. It can help you measure the degree of angles. Radian-scale protractors measure angles in radians.

It is probably the simplest instrument for measuring the angle between two faces of component. Then count, in the same direction, the number of spaces from the zero on the Vernier scale to a line that coincides with a line on the main scale; multiply this number by 5 and the product will be the number of minutes to be added to the whole number of degrees.