J.R. Clancy Rope Locks - Cam operated devices that clamp the hand line that is attached to an arbor in order to prevent movement. Designed to hold the unbalanced load in a set. One piece ASTM A536 ductile iron body with 10
JR Clancy, Counterweight Rigging Systems, Blocks, Head Blocks
JR Clancy, Counterweight Rigging Systems, Blocks
Brickhouse™ Rope Locks - Rigging Systems
JR Clancy, Counterweight Rigging Systems, Guide Systems
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JR Clancy, Counterweight Rigging Systems, Locking Rails
Manual Counterweight Rigging - IWEISS
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Fly system - Wikipedia
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Counterweight Systems - Rigging Systems