What scale on the micrometer is used to measure to 0.0001?

To measure to 0.0001 mm (or 0.1 micrometers), a micrometer with a vernier scale is typically used. This type of micrometer has a main scale and a sliding scale that allows for precise readings, often featuring a total of 50 divisions on the vernier that correspond to 1 mm on the main scale. Each division on the vernier scale represents 0.02 mm, enabling measurements to the nearest 0.0001 mm.