[sammyg2]

Back in the olden days they built most everything with a compass, a straight edge, a level and a plumb bob.
Kind of a lost art.

I used to be a millwright and most millwrigths had no idea where than name came from. I researched it and was facinated by what I found.

Many moons ago before the industrial revolution, lots of machinery was built out of wood. Things like wind mills, grain mills, etc.
Carpenters were great at woodworknig but not as strong at the mechanical part so a specilized craft emerged of mechanics who worked in wood. sdopme of the stuff they built was incredible and they did it with wood working tools and basic geometry.