The least count of a Vernier calliper is ______.

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  1. 0.001 mm
  2. 0.01 mm
  3. 0.002 mm
  4. 0.02 mm

Answer (Detailed Solution Below)

Option 4 : 0.02 mm
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Explanation:

The least count of any instrument is the smallest value that it can measure accurately.

Vernier Caliper

  • A vernier caliper consists of two main parts:
    1. the main scale engraved on a solid L-shaped frame
    2. 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

F1 Satya Madhu 22.07.20 D14

Important Points

  • A micrometer may have a least count of 0.01 mm 
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