A differential hoist is made with

Industrial fork-lift

Industrial fork-lift is a four-wheeled vehicle used for material handling. A forklift is a powered industrial truck used to lift and move materials over short distances.

Retaining chains

A tripod consists of three legs, which are locked in position at the bottom by Retaining chains.

Crowning

Crowning is the permanent method of fastening of strands of a rope

Knot

Fastening of one part of a rope to another part of the rope is known as knot