zero error

Question

Zero error in vernier caliper implies:

RankGuru · Accepted Answer

**Zero Error** occurs when the zero marks of the main scale and vernier scale do not coincide when the jaws are closed.
- **Positive Zero Error**: Vernier zero is to the **right** of the main scale zero. Correction is subtracted.
- **Negative Zero Error**: Vernier zero is to the **left** of the main scale zero. Correction is added.
- True reading = (Observed reading) - (Zero error with sign).

Rank Guru

zero error

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