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About Least Count of Vernier Caliper. Method of its removal.

Vernier calliper least count in hindi:- Welcome My Website- iticourse.com Friends, in this post I have learned how to find least count of vernier caliper. Complete information about etc. is given.

What is the least count of a vernier caliper?

“The smallest or minute measure measured by a vernier caliper is least count They say.”
Least count formula:- The value of a part of the main scale – the value of a part of the Vernier scale

Least count is found in measuring tools like vernier caliper, micrometer, steel rule, vernier height gauge, steel tape etc. And the least count is also known as least measure. Least means least or smallest, measurement means to find the size of the length or diameter of a job, that is, to measure or measure.

The least count is that of the direct measuring tool. Indirect measuring and comparison tools are not available.

direct measuring tool

The measuring tool by which direct measurement of a job is taken is called direct measuring tool. Eg:- Steel Rule, Vernier Caliper, Micrometer, etc.

indirect measuring tool

The measuring tool by which indirect measurement of a job is done is called indirect measuring tool. Eg:- Genie caliper, divider, telescopic gauge etc.

comparative measurement tool

In this, the measurement of the job is taken by comparing it to a master piece.

How to find least count?

It is extracted in two ways. One of which is the metric system and the other is the British system. It is explained in detail below. Which is as follows-

1.Metric Method

The calipers of this method have or are marked with mm markings on the scale. And in this method the value of one part of the main scale is one mm. And 49 parts of the main scale are divided into 50 parts on the Vernier scale.

Therefore, since one part of the main scale is one mm, 49 parts = 49 mm.

Now 50 parts of Vernier scale = 49 parts of main scale
After this, the value of one part of the Vernier scale = 49/50
According to the above formula,
Least count = 1-49/50 = 50-49/50 = 1/50
Least count = 0.02 mm

2.British Method

In this method one inch of the vernier caliper is divided into 10 parts. And out of these 10 parts, 1 part is also divided into 4 parts i.e. four sections.
So 1 inch has 10 sections plus 40 sections.
Value of one part of 1 inch = 0.1 inch
A section of 1 inch has a value of = 0.025 or 1/40 inch.
In this method, 24 parts of the main scale are divided into 25 parts on the Vernier scale.
So 24 parts of main scale = 24/40 inch
Now vernier scale one 25 parts = main scale 24 parts
Value of one part of Vernier scale = 24/40×25 = 0.024 inch
According to the above formula,
Least count = 0.025 – 0.024 = 0.001 inch

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