Use of Vernier CaliperUse of Vernier Caliper

Vernier Caliper caVernier Caliper can be used to measn be used to measure diameter, thicure diameter, thickness very accuratkness very accurately.ely.

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Different Parts of Vernier CaliperDifferent Parts of Vernier Caliper

Inside Inside jawsjaws

Outside Outside jawsjaws

VernierVernierScaleScale

Main Main ScaleScale

Depth Depth GaugeGauge

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Measuring Internal DiameterMeasuring Internal Diameter

Use the inside Use the inside jaws of the jaws of the caliper as showncaliper as shown

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Measuring External DiameterMeasuring External Diameter

Use the outside jaws of Use the outside jaws of the caliper as shownthe caliper as shown

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Measuring Depth of a HoleMeasuring Depth of a Hole

Use the depth Use the depth gauge of the gauge of the caliper as showncaliper as shown

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Reading the Vernier ScaleReading the Vernier Scale Read the “0” position of the Read the “0” position of the

vernier scale on the main scavernier scale on the main scale to get a rough reading.le to get a rough reading.

Rough reading = 18mmRough reading = 18mm

Look along the vernier scale Look along the vernier scale until one of the vernier divisiuntil one of the vernier division coincides with the main son coincides with the main scalecale

Accurate reading = 18.46mmAccurate reading = 18.46mm±0.01 mm±0.01 mm

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ExerciseExerciseWhat is the reading in the caliper shown?What is the reading in the caliper shown?Please click on one of the following answer.Please click on one of the following answer.

A. 3.51cm

B. 3.57cm

C. 3.62cm

D. 3.642cm

E. 3.67cm

3.5

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0 5 10

3 4

overlap

You Are Wrong!You Are Wrong!

See the Solution

Try Again

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Congratulation!Congratulation!You are Right!You are Right!

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0 5 10

3 4

overlap

SolutionSolution

Read the “0” position of the vernier scale on the main scale to get a rough reading.Rough reading = 3.6cmLook along the vernier scale until one of the vernier division coincides with the main scaleAccurate reading = 3.67cm±0.005cm

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