frankraney wrote:
The tripod must be level in two directions, 90 deg apart. Most heads can do this. Once leveled in two directions, it will be level full 360.
Your photo only shows one bubble. You can not get a good level with only one bubble, or it will take a long time to do it, unless you use a center bubble, not a side to side, like the one you show.
Try this, the bubble level rotated 90 degrees on the head, without moving the tripod.