PROJECTS REMAKING HISTORY

Heron of Alexandria and the Gin Pole

By William Gurstelle

image

Gregory Hayes (photo); Damien Scogin (diagrams)

CAUTION The amount of weight that your gin pole can handle will depend on the length and thickness of the pole, the capacity of the rope, the quality of your knots, and the holding power of the stakes. Take it easy to begin with as you learn the capability of your rig.

image

In antiquity, the only way to raise a heavy object was to put a rope on it, climb a ladder, and pull, or if you had enough time, build a ramp.

The ...

Get Make: Technology on Your Time Volume 34 now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.