A Vernier Calliper is a precision measuring instrument used to measure the internal diameter, external diameter, and depth of objects with high accuracy. It is widely used in physics and engineering labs to perform measurements down to 0.1 mm or 0.01 mm precision, depending on the model.
Material: Stainless steel or durable plastic
Measuring Range: Typically 0 – 150 mm (or more)
Least Count: 0.1 mm or 0.02 mm
Parts:
Main scale and vernier scale
Outside jaws (for external diameter)
Inside jaws (for internal diameter)
Depth rod (for depth measurement)
Locking screw
Measuring diameter of wires, spheres, pipes, etc.
Used in physics, mechanical, and engineering experiments
Important for CBSE/ICSE/State board practicals
Teaches concepts like least count, precision, and instrument error
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