Uses to raise or lower personnel, providing a stable way to reach a working level, even in tight quarters. After reaching the working level, device can be locked out without needing a tie-off. Back-up safety is provided through inertial speed break that activates automatically if user loses control or become unconscious. Slight tug on rope will resume raising or lowering. Ideal uses include confined space entry and retrieval, emergency squads, utility work, chemical-oil industry, scaffolding operations, repair/maintenance operations, construction work, mining, overhead crane rescue, agricultural industry and more. Meets or exceeds all applicable OSHA regulations and ANSI standards.