Recent Blogs
Shears with Winch or Tackle Block: How It Works, Diagram, Formula & Rigging Uses Explained
How a shears lifting rig works — the geometry, the tackle block math, and how riggers use it to set heavy loads on bridges, masts,...
Blackwall Tackle Hitch Mechanism Explained: How It Works, Parts, Formula, and Uses
See the single Blackwall hitch’s rope crossing and compare rope and hook-bowl dimensions. The calculator does not establish holding capacity or a lifting rating.