How to Read Vernier Caliper

Vernier Caliper Interactive Lab

Learn the parts, practice readings, and play a measurement game.

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What is a Vernier Caliper?

A vernier caliper is a precision instrument used to measure external diameter, internal diameter, depth, and length with high accuracy.

Main Scale Gives the base reading in millimetres.

Vernier Scale Helps read fractions of a main scale division.

Least Count Smallest measurable value by the instrument.

Formula Reading = Main Scale Reading + Vernier Coinciding Division × Least Count - Zero Error

Live Vernier Caliper Simulator

Main Scale Reading 12 mm Vernier Coinciding Division 18 Zero Error 0.00 mm Least Count 0.10 mm 0.05 mm 0.02 mm

Main Scale Reading12.00 mm

Vernier Reading0.36 mm

Zero Error0.00 mm

Final Reading12.36 mm

Move the sliders to see how the reading changes.

Measurement Game

A hidden object thickness is generated. Adjust the caliper reading and try to match it.

Score0

Best0

StatusReady

Main Scale Reading 9 mm Vernier Coinciding Division 12 Zero Error 0.00 mm

Click “New Challenge” to start.