Question

what is the reading of this 0 - 25mm micrometer graduated in 0.001mm? enter your answer in the box below out to one thousandths of a mm. 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 5.5 mm (the value on the main scale to the left of the thimble).

Step2: Read thimble - scale value

The thimble scale has 18 divisions past the main - scale line. Since each division on the thimble scale represents 0.01 mm, the thimble - scale reading is \(18\times0.01 = 0.18\) mm.

Step3: Calculate total reading

The total reading of the micrometer is the sum of the main - scale reading and the thimble - scale reading. So, \(5.5+0.18 = 5.680\) mm.

Answer:

5.680