reading micrometers practice #2 (fr)\nwhat is the decimal reading of this micrometer? (make sure your answer…

reading micrometers practice #2 (fr)\nwhat is the decimal reading of this micrometer? (make sure your answer starts with 0, contains a decimal ., and is accurate to 3 digits.)

reading micrometers practice #2 (fr)\nwhat is the decimal reading of this micrometer? (make sure your answer starts with 0, contains a decimal ., and is accurate to 3 digits.)

Answer

Explanation:

Step1: Determine the main - scale reading

The main - scale reading is 4.5 mm (the value on the main scale up to the edge of the thimble).

Step2: Determine the thimble - scale reading

The thimble scale has 50 divisions per revolution and each division represents 0.01 mm. The thimble scale reading is 0.00 mm (the line on the thimble that aligns with the horizontal line on the main scale).

Step3: Calculate the total reading

The total reading is the sum of the main - scale reading and the thimble - scale reading. So, the reading is $4.5+0.00 = 4.500$ mm. But we need to start with 0, so we convert it to a fraction of 10 mm. $\frac{4.500}{10}=0.450$.

Answer:

0.450