Chapter 32, Problem 1A

Use an electronic vernier caliper to measure the length of a ballpoint pen.

To determine

The length of the ballpoint pen.

Answer to Problem 1A

The length of the ballpoint pen is $\text{140 mm}$.

Explanation of Solution

Given:

A type of ball point pen is shown below:

Concept used:

Use the digital caliper to measure the length of the ballpoint pen.

Calculation:

Following are the steps to measure the length of the ballpoint pen:

• Press the ON/OFF button to on the digital caliper. Set the millimeter measurement by pressing mm button.
• Set the jaws to zero measurement by pressing ZERO button as shown below:



• Put the ballpoint pen in between lower jaws and take the reading on the LCD display. The reading for the length is 140 mm shown in LCD display.

Thus, the length of the ballpoint pen is $\text{140 mm}$.

Conclusion:

The length of the ballpoint pen is $\text{140 mm}$.