| A leveling head or ball-and-socket joint on the top of the tripod will be found of material aid in leveling the instrument. |
| It is a bath that can be rocked, or inclined in any direction, for its center rests upon a ball-and-socket joint. |
| The hip joint is a ball-and-socket joint because the spherical head of the femur moves inside the cup-shaped acetabulum. |
| This ball-and-socket joint allows your arms to move in practically any direction you want, be it overhead, sideways, forward, back, or any direction in between. |
| Like its cousin the Hispaniolan solenodon, whose snout sits on a ball-and-socket joint, it is an evolutionary curiosity. |
| Hollows are very different in shape and size, so each camera was attached to a ball-and-socket joint to allow us to adjust the orientation of cameras inside the hollow. |
