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Live entertainment

Double-purchase counterweight system

A counterweight arrangement using mechanical advantage so the arbor travels about half the batten distance.

Also known as: double purchase

Reviewed

Setup

  • Account for doubled arbor weight and changed forces, loading practice, travel, and qualified operation.

Venue contexts

  • Theatre, concerts, festivals, broadcast, and corporate events, as applicable

Signal flow

  • Confirm the source, patch, transport, control, and destination for the system involved.

In practice

Account for doubled arbor weight and changed forces, loading practice, travel, and qualified operation.

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