ROLLNLOCK is the multipurpose device CLIMBING TECHNOLOGY dedicates to mountaineering, rope access work and self-rescue. Compact, ultralight and easy to handle, it offers three different modes of ...

The HitchMaster is a simple pulley with no moving parts. Like any pulley, it works by trading force for distance: it's easier to lift, say, an engine block, but you'll have to pull the rope a lot ...

Introduction Before the industrial age people largely had to rely on muscle power to move and lift heavy objects. Simple machines such as pulleys, levers and ramps made it easier for humans to lift ...