Clamp used to hang lanterns on a lighting bar. They are good for Over Rigging a lantern as they grip the bar all the way round, however you usually have to support the fixture while tightening the wing nut, unlike a hook clamp. Overlocker Clamps get round the problems of both other types of clamp. A Safety Bond should also be fitted to provide a means of secondary suspension.

Pairs of half couplers are also used to join things to truss, as they have a larger surface (so won't bite into the truss, and a Safe Working Load (SWL) unlike Scaffolding Clamps.

See Also

• Hook Clamps
• Overlocker Clamps