My car requires a maintenance procedure that makes it necessary to raise the car off of the floor, but also to keep it level. A set of ramps supports the front wheels. I made a set of jack stands to support the rear of the car at just the right height for the car to be level. The floor jack in the photo was used only to place the jack stands.
Step 1: Take a reading with a level
I opened the door and took a reading with a level to note the position of the bubble.