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 the main - scale value

The main - scale reading is 0.5 mm. The horizontal line on the thimble is above the 0.5 - mm mark on the main scale.

Step2: Read the thimble - scale value

The thimble has 50 divisions for 0.5 mm, so each division is 0.01 mm. The thimble scale reading is 12.5 × 0.01 mm=0.125 mm.

Step3: Calculate the total reading

The total reading is the sum of the main - scale and thimble - scale readings. Total reading = 0.5 mm+0.125 mm = 0.625 mm.

Answer:

0.625