Use of Vernier Caliper Vernier Caliper can be used to measure diameter, thickness very accurately.

Different Parts of Vernier Caliper Main Scale Depth Gauge Inside jaws VernierScale Outside jaws The Mission Covenant Church Holm Glad College

Measuring Internal Diameter Use the inside jaws of the caliper as shown

Measuring External Diameter Use the outside jaws of the caliper as shown The Mission Covenant Church Holm Glad College

Measuring Depth of a Hole Use the depth gauge of the caliper as shown

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 The Mission Covenant Church Holm Glad College

Exercise What is the reading in the caliper shown? Please click on one of the following answer. 5 10 3 4 overlap A. 3.51cm B. 3.57cm C. 3.62cm 3.5 D. 3.642cm E. 3.67cm

You Are Wrong! Try Again See the Solution

Congratulation! You are Right!

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 5 10 3 4 overlap