Vernier caliper scale with the normal 0.02 vernier constant, showing measurement of object at 19.44 mm to two decimal places The use of the vernier scale is shown on a vernier caliper which measures the internal and the external diameters of an object.

What is a Vernier Caliper? A Vernier caliper is an instrument used to measure linear dimensions, it consists of 2 scales (the main scale and vernier scale) and is used to measure the outside and inside diameter as well as the depth of a workpiece. Vernier Caliper is used for making accurate measurements of a straight length between two points.

the vernier scale that can slide along the main scale; A Vernier scale on caliper may have a least count of 0.02 mm. It is commonly used to measure accurately: outside diameters of shafts; thicknesses of various parts; diameters of holes or rings; internal dimensions of hollow jobs or articles; A micrometer may have a least count of 0.01 mm

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The least count of a common scale is 0.1 cm or 1 mm. It is difficult to further subdivide it to improve the least count of the scale. A Vernier scale enables this to be achieved. Fig. 1.1. Principle: Determination of Least Count or Vernier Constant:

Take Exam What is Least Count ? Least Count of an instrument is the smallest change or value of a physical parameter an instrument can measure or detect. For example, the ruler shown below can not measure a dimension more than 1 mm in length. Therefore ruler L.C. is 1 mm. What is the difference between Least Count and Precision ?

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To understand this let’s consider an example of digital and mechanical Vernier Calipers. Since Digital Vernier L.C. (0.01 mm) is smaller than mechanical Vernier L.C. (0.02 mm). Mechanical vernier will measure a 5±0.21 mm dimension as 5±0.20 or 5±0.22 mm. Whereas digital vernier will measure it 5±0.21. Therefore Digital Vernier is more.

Use a vernier caliper to make measurements to the nearest 1/10 of a millimeter. Use a micrometer to make measurements nearest 10-6 meters using a micrometer. Use an electric scale to measure mass to the nearest 1/100 of a gram. Use a pendulum to measure the acceleration due to gravity. Introduction

Vernier Caliper is a widely used linear measurement instrument with the least count of 0.02 mm. It is used to measure linear dimensions like length, diameter, and depth. Let’s discuss common Mechanical measuring instruments with their least count (Considering least count of commonly used instruments, you may find changes in special cases)

Vernier caliper: ± 0.01cm Triple-beam balance: ± 0.02g Graduated cylinder: 20% of the least count Here's an example. The uncertainty of all measurements made with a meter stick whose smallest division (or least count) is one millimeter is 20% of 1mm or 0.02cm. Say you use that meter stick to measure a metal rod and find that the rod is.

Use of Vernier Callipers to (i) measure diameter of a small spherical/cylindrical body, (ii) measure the dimensions of a given regular body of known mass and hence to determine its density; and (iii) measure the internal diameter and depth of a given cylindrical object like beaker/glass/calorimeter and hence to calculate its volume.