Slackening these screws allows rotation between the lens and the camera body.

Link joining pivot pin to lever (5) with pins to allow joint rotation.

The extra would be a reserve, would allow rest and rotation during extended interstellar passages.

The rollers must support the kiln, and allow rotation that is as nearly frictionless as possible.

Hence, straightening the arm allows rotation of the whole arm and alleviates the pressure on the joints.

When rotated the seat comes off these bumpers to allow easy rotation.

Both joints are designed to allow free rotation in all directions.

Unlike previous examples, this molecule allowed rotation around the bonds of the carbenic atom.

The joystick allows full 360-degree rotation of the vehicle to assist in aiming.

The rear linkage mechanism is complicated by the need to allow rotation where the fork and handlebars attach to the frame.