Question

what is the reading of this 3 - 4\ micrometer? enter your answer in the box below out to ten thousandths of an inch. if you need a bigger picture, right click on the image and select \open image in new tab\ (chrome browser - other browsers may have slightly different wording).

Explanation:

Step1: Read main - scale value

The main - scale reading is 5.0000 inches as the 5 - inch mark on the main scale is clearly visible.

Step2: Read thimble - scale value

The thimble - scale has 50 divisions per revolution and each division is 0.0010 inches. The thimble - scale reading is 0.0000 inches as the zero on the thimble scale is aligned with the horizontal line on the main scale.

Answer:

5.0000