Trunnions
Trunnions are specifically ground-bearing that permit you to attach a fixture to the surface, typically on a riser, and allow full rotation of the fixture and the parts mounted on it.
Jigs & Fixtures
Jigs are devices that hold or direct cutting tools as they carry out repetitive tasks like drilling or tapping holes. Fixtures, on the other hand, hold a workpiece steadily in a fixed position, orientation, or location rather than guiding a cutting tool.
Welding Positioning
A welding positioning is a mechanical device that rotates and holds a workpiece so that a welder can work on a consistent surface and at the correct angle.
