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 inches plus 0.5 inches (the half - inch mark is visible), so it is 2.5 inches.

Step2: Read thimble scale value

The thimble scale has 15 divisions past the zero mark on the main scale. Each division on the thimble scale represents 0.001 inches. So the thimble scale reading is 15×0.001 = 0.015 inches.

Step3: Calculate total reading

The total reading is the sum of the main - scale reading and the thimble scale reading. So it is 2.5+0.015 = 2.5150 inches.

Answer:

2.5150