2.4 Use camera preview and drag the blue line to the middle of the object.
Please
keep switch in the off position when using camera preview.
2.5 Since the parts of the cylinder are not all on the focal plane, you will see the result of
the preview with a drop. Click the camera cursor at the top of the object again.
2.6 After clicking start, you will be prompted to switch on the rotary module.
2.7 Close the cover and click START to continue the work.