Transcript Use of Vernier Caliper

Use of Vernier Caliper
Vernier Caliper
can be used to
measure diameter,
thickness very
accurately.
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Different Parts of Vernier Caliper
Inside
jaws
Main
Scale
Depth
Gauge
Vernier
Scale
Outside
jaws
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Measuring Internal Diameter
Use the inside
jaws of the
caliper as shown
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Measuring External Diameter
Use the outside jaws of
the caliper as shown
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Measuring Depth of a Hole
Use the depth
gauge of the
caliper as shown
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Reading the Vernier Scale




Read the “0” position of the
vernier scale on the main
scale to get a rough reading.
Rough reading = 18mm
Look along the vernier scale
until one of the vernier
division coincides with the
main scale
Accurate reading =
18.46mm±0.01 mm
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Exercise
What is the reading in the caliper shown?
Please click on one of the following answer.
A. 3.51cm
B. 3.57cm
C. 3.62cm
3
4
3.5
D. 3.642cm
0
5
10
E. 3.67cm
overlap
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You Are Wrong!
Try Again
See the Solution
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Congratulation!
You are Right!
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Solution
Read the “0” position of the
vernier scale on the main scale
to get a rough reading.
Rough reading = 3.6cm
Look along the vernier scale
until one of the vernier division
coincides with the main scale
Accurate reading =
3.67cm±0.005cm
3
4
0
5
10
overlap
The Mission Covenant Church Holm Glad College