What is the difference between a vernier caliper and a screw gauge?

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Solution

Difference between a vernier caliper and a screw gauge:
A vernier caliper is used to measure external measurements.
The minimum count of vernier caliper is $0.001 c m$
While a screw gauge is used to measure both external and internal measurements.
The minimum count of screw gauge is $0.01 c m$
Vernier caliper Screw gauge
1. It is used to measure internal dimensions. 1. While it can't be used to measure internal dimensions.
2. It can be used for both (internal and external) types of measurement. 2. It can be used only for external measurement.
3. The least count is $0.1 m m$ 3. The least count is $0.01 m m$
4. It is less precise in comparison to the screw gauge. 4. It is more precise.

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Similar questions

Assertion (A): The accuracy of a standard screw gauge is more than the accuracy of a standard vernier caliper.

Reason (R): The least count of standard screw gauge is more than the least count of standard vernier caliper.

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Vernier caliper	Screw gauge
1. It is used to measure internal dimensions.	1. While it can't be used to measure internal dimensions.
2. It can be used for both (internal and external) types of measurement.	2. It can be used only for external measurement.
3. The least count is $0.1 m m$	3. The least count is $0.01 m m$
4. It is less precise in comparison to the screw gauge.	4. It is more precise.