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ICSE Class 9 Answered

How reading is done in vernier calliper
Asked by Sanskar294 | 11 Jun, 2018, 10:27: AM
answered-by-expert Expert Answer
 
- Vernier callipers are designed such that the length of n divisions on vernier scale is equal to the length of (n-1) divisions of the main scale.
- Generally, a vernier scale has 10 divisions and the total length of these 10 divisions is equal to the length of 9 divisions of the main scale.
- The main scale is graduated with value of one division on it equal to 1 mm.
- Thus, each division of vernier scale is smaller in size by 1/10 mm than a division on the main scale.
 
Using Vernier Calliper:
 
- Find where the 0 mark of the sliding vernier scale lines up on the fixed mainscale.
- Find the mark on the vernier scale that most closely lines up with one of themarks on the main scale.
- Add the two values together to get the total reading.
 - The main scale contributes the main number(s) and one decimal place to the reading (E.g. 2.1 cm, whereby 2 is the main number and 0.1 is the one decimal place number.
 - The vernier scale contributes the second decimal place to the reading (E.g. 0.03 cm)

Answered by Abhijeet Mishra | 11 Jun, 2018, 02:16: PM
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ANSWERED BY EXPERT ANSWERED BY EXPERT
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