Question

To read a micrometer you first read the ____ scale.

1) Sleeve
2) Thimble
3) Vernier
4) Any of the above

Answer 1

To read a micrometer, you first read the sleeve scale, followed by the thimble scale.

Step-by-step explanation:

To read a micrometer, you first read the sleeve scale. The sleeve scale is the main scale that provides the whole number values of the measurement. After reading the sleeve scale, you then read the thimble scale. The thimble scale provides the fractional part of the measurement, typically in increments of 0.01 mm. The vernier scale is not used to read a micrometer. So the correct answer is 1) Sleeve.