Recent Blogs
Lifting Jack: Rotating-Screw Animation and Work-Ratio Calculator
See how a rotating screw moves through a fixed nut. Compare handle path, screw lead and entered efficiency to calculate an idealized axial-force ratio.
Skip Jack Mechanism Explained: How the Ratchet and Pawl Lifting Jack Works, Parts and Uses
Skip Jack mechanism explained — how the ratchet-and-pawl lifting jack works, where road crews use it, formulas, worked example, and failure modes.