# Introduction The purpose of this lab is to demonstrate how to display two scales on the left and right y-axis. This example uses the Fahrenheit and Celsius scales. We will use a closure function to register as a callback to update the second axis according to the first axis. ## VM Tips After the VM startup is done, click the top left corner to switch to the **Notebook** tab to access Jupyter Notebook for practice. Sometimes, you may need to wait a few seconds for Jupyter Notebook to finish loading. The validation of operations cannot be automated because of limitations in Jupyter Notebook. If you face issues during learning, feel free to ask Labby. Provide feedback after the session, and we will promptly resolve the problem for you.
Click the virtual machine below to start practicing