A digital vernier micrometer is necessary when your required measurement accuracy is to within ____ of an inch.

A digital vernier micrometer is necessary when your required measurement accuracy is to within ____ of an inch.

• A. one ten-thousandth
• B. one thousandth
• C. one hundredth
• D. one millionth

Answer: (A)

When you need measurement accuracy to within 0.0001 inch, you need an instrument that can resolve that small distance. A digital vernier micrometer is designed to read down to the ten-thousandth of an inch (0.0001 in), thanks to the vernier interpolation and the digital display. This level of resolution lets you capture very fine differences and reduces reading errors compared with coarser scales. Standard micrometers without a vernier typically resolve to 0.001 inch, which is not precise enough for 0.0001 inch. Readings like 0.01 inch are even coarser, and a millionth of an inch (0.000001 in) is beyond what a common micrometer provides. So the digital vernier micrometer matches the needed precision precisely.

When you need measurement accuracy to within 0.0001 inch, you need an instrument that can resolve that small distance. A digital vernier micrometer is designed to read down to the ten-thousandth of an inch (0.0001 in), thanks to the vernier interpolation and the digital display. This level of resolution lets you capture very fine differences and reduces reading errors compared with coarser scales. Standard micrometers without a vernier typically resolve to 0.001 inch, which is not precise enough for 0.0001 inch. Readings like 0.01 inch are even coarser, and a millionth of an inch (0.000001 in) is beyond what a common micrometer provides. So the digital vernier micrometer matches the needed precision precisely.