The device that we will build is called a pantograph. This device is based upon an old-fashioned drawing tool that allowed the user to copy down drawings and make them different sizes without distorti...The device that we will build is called a pantograph. This device is based upon an old-fashioned drawing tool that allowed the user to copy down drawings and make them different sizes without distortions. We will use our pantograph to accurately copy the constellation patterns that we see in the sky. All we need to do is measure distances between points with a ruler, and copy down angles!
