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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What is the uses of bevel protractor? The provision is made for an internal circular scale which is graduated in divisions of 10 minutes of arc.

Vernier and Optical Bevel Protractor (Metrology)

A bevel protractor is a graduated circular protractor with one pivoted arm; used for measuring or marking off angles. To obtain the measurement of the angle between the bsvel and the blade of over 90 degrees subtract the number of degrees as indicated on the dial from degrees.

What is the least count of meter rod? In types A and B, the vernier is graduated to read to 5 minutes of arc whereas in case of type C, the scale is graduated to read in degrees and the bevel protractor is without vernier or fine adjustment device or acute angle attachment. It can help you measure the degree of angles. It can be clamped in coubt position.


What is the least count of bevel protractor

Dimensional instruments Mathematical tools Navigational equipment Technical drawing. Mechanical Bevel Protractor with Vernier and acute angle attachment.

Least count of vernier? Please help improve this article by adding citations to reliable sources. From Wikipedia, the free encyclopedia. The adjustable blade is capable of rotating freely about the centre of the main scale engraved on the body of the instrument and can be locked in any position.

Read off directly from the main scale the number of whole degrees between 0 on this scale and the 0 of the Vernier scale.

Least count of dial gauge? Divided Circles Metrology Previous post: A protractor is a geometric tool that is used to measure the degreeof angles. The blade can be locked in any position.

In no time at all you will be able to design and. Articles needing 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 coubt January All articles needing expert attention Wikipedia articles needing clarification from January Commons category link is on Wikidata. A small microscope is fitted through which the circle graduations can be viewed.

This instrument is most commonly used in workshops for angular measurements till more precision is required. By using this site, you agree to the Terms of Use and Privacy Policy.

Universal Bevel Protractor Series

It is used for measuring and laying out of angles accurately and precisely within 5 minutes. Readings are taken against a fixed index line or vernier by means of an optical magnifying system which is internal with the instrument.


A bevel is an angled, sloping edge – one which is not at a 90degree angle. The bevel protractor is used to establish and test angles to very close tolerances.

The scale is graduated as a full circle marked 0—90—0— Use of bevel protractor for checking of vee block. Universal bevel protractors are also used by toolmakers; as begel measure angles by mechanical contact they are classed as mechanical protractors. It is designed in such a way that its back is flat and there are no projections beyond its back so that when the bevel protractor is placed on its back on a surface plate there shall be no perceptible rock. The surface of the mirror is flat, but the edges are cut ground off …actually at an angle to the plane of the surface of the mirror.

Use of Vernier protractor for measuring acute angle. 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.

Reading the bevel protractor vernier scale: Protractors have traditionally been one-sided. Check out what’s new Download the latest woodworking and metalworking plans, vector patterns and 3D models. Wikimedia Commons has media related to Protractors. Would you like to merge this question into it?