In general, a micrometer will measure to the nearest 0.01 mm while a

**vernier caliper**will measure to the nearest 0.1 mm. This makes the micrometer the**more precise**of the two measuring devices. You might understandably think that it would be**more accurate**to use the micrometer than the**calipers**.Moreover, what is the reading accuracy of a vernier caliper?

The vernier scales may include metric measurements on the lower part of the scale and inch measurements on the upper, or vice versa, in countries that use inches. Vernier calipers commonly used in industry provide a precision to

**0.01 mm**(**10 micrometres**), or**one thousandth**of an inch.Why screw gauge is more accurate than vernier caliper?

Answer: As compare to

**Vernier**calipers,**screw gauge is more precise**because the least count of**Vernier**calipers is 0.1 mm and for**screw gauge**it is 0.01 mm. So, a**screw gauge**can measure**more**precisely**than**a**Vernier caliper**.Why micrometer screw gauge is accurate?

The

**micrometer screw gauge**. If a more**accurate**measurement is needed a**micrometer screw gauge**can be used. This normally has**accuracy**of 0.01 mm and is used to measure objects no more than a few millimetres across.