IATSE Local 15 Written Test Study Guide
- Counterweight System
Term
Arbor
Definition
A metal frame used to support counterweights (bricks). They contain plates called "spreaders",
used to preserve the bricks on them. The pinnacle plate carries two collars and a thumbscrew.
Loosen the thumbscrew to boost the plate
Location
Image: Arbor
Term
Batten
Definition
A lengthy pipe attached through wire ropes to the counterweight system from which
surroundings, drops, or lights are hung. Also generally known as a pipe or machine pipe
Location
Image: Batten
Block
A pulley or pulleys in a body
Term
Grid
Definition
The metal or wood framework or gridiron suspended above the degree on which loft blocks and
sheaves are hooked up, via that are run the lines used to fly surroundings, drops, and lighting
battens
Location
Image: Grid
Term
Counterweight
Definition
- Counterweight System
Term
Arbor
Definition
A metal frame used to support counterweights (bricks). They contain plates called "spreaders",
used to preserve the bricks on them. The pinnacle plate carries two collars and a thumbscrew.
Loosen the thumbscrew to boost the plate
Location
Image: Arbor
Term
Batten
Definition
A lengthy pipe attached through wire ropes to the counterweight system from which
surroundings, drops, or lights are hung. Also generally known as a pipe or machine pipe
Location
Image: Batten
Block
A pulley or pulleys in a body
Term
Grid
Definition
The metal or wood framework or gridiron suspended above the degree on which loft blocks and
sheaves are hooked up, via that are run the lines used to fly surroundings, drops, and lighting
battens
Location
Image: Grid
Term
Counterweight
Definition
