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T
TRUNNION ARM
U-shaped bracket between the hook clamp and the main body of a lighting
instrument, enabling it to be tilted to any angle.
TRUSS
A framework of alloy bars and triangular cross-bracing (usually of
scaffolding diameter) providing a rigid structure, particularly useful for
hanging lights where no permanent facility is available. Very often
box-shaped in cross section, so known as BOX TRUSS. This type of truss is
useful for touring as lanterns / speakers etc can be hung inside the truss
which protects them when loading and takes up less space in the truck.
TUNGSTEN HALOGEN
A standard tungsten filament lamp loses its brightness in its' lifetime.
Tungsten Halogen lamps use a Quartz envelope ("bulb") filled with halogen
gas to give an almost constant color temperature.
TWIST-LOCK
A standard connector for stage cable. Although not common in the touring
industry, the twistlock connector can be found in many permanent
installations.
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