Screw Gauge - One Word Answers | Class 9 Physics MCQ & Concepts

Class 9 Physics: One-Word/Term Answers on Screw Gauge

1. The instrument used to measure very small thicknesses accurately.

Screw Gauge

2. The distance moved by the screw per complete rotation.

Pitch

3. The smallest measurement a screw gauge can measure accurately.

Least Count

4. The formula for calculating the least count of a screw gauge.

Pitch / Number of divisions on circular scale

5. The part of the screw gauge that rotates to move the spindle.

Thimble

6. The cylindrical scale marked around the rotating part of a screw gauge.

Circular Scale

7. The scale marked on the base line of a screw gauge.

Main Scale

8. The error that occurs when zero of the circular scale does not coincide with the main scale.

Zero Error

9. The correction applied if the instrument shows a reading when nothing is measured.

Zero Correction

10. The spindle moves forward or backward due to this mechanism.

Screw

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