The rock rigging: Chain with grab-hook, 3-hook rig of 3/16 Aircraft cable.

Calibration scale: US size 11

Winch Mount and Crane Base on GMC Yukon

6 Bolts to plow-mount attach points

Square tubing sockets on OEM Trailer Hitch receive outriggers with boom winches, stabilizing jacks

Roof rack has boom cable pulleys on crossbar

Boom of Rohn 25 Communication Tower sections, hanging in my barn.

Crane lifted posts, beams for this 32x32 foot barn, for one-man building job.