Stone to Silicon

Tools & manufacturing · c. 1,300 BCE

Lathe

Spin the work, hold the tool still, and get a perfect circle.

An Egyptian tomb relief from about 1300 BCE shows a bow-driven lathe. Turning became the mother machine tool from which later screw-cutting and precision lathes descend.

See it in the living treeWikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

What it led to 1