Question

what is the reading of this 2 - 3\ 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 2.0000 inches (the value on the main scale to the left of the thimble).

Step2: Read thimble - scale value

The thimble scale has 50 divisions per 0.025 inches. Each division is $\frac{0.025}{50}=0.0005$ inches. The thimble scale reading is at the 15 - th division, so the thimble - scale value is $15\times0.0005 = 0.0075$ inches.

Step3: Calculate total reading

The total reading is the sum of the main - scale reading and the thimble - scale reading. So, $2.0000+0.0075 = 2.0075$ inches.

Answer:

2.0075