The US Navy's old training materials are fantastic for learning about various technologies.
I think their masterpiece is "Basic Hand Tools" a handbook written in plain English that describes the use of practically every hand tool ever invented.
"Basic Hand Tools" on the hammer:
>Whoever conceived the idea of cracking a nut with a rock unknowingly invented a tool. When a later genius tied a stick to the rock, he invented the first hammer. There have been a lot of improvements since that humble beginning.
The modern version "Tools and Their Uses" also covers machine tools but is less fun.
I think their masterpiece is "Basic Hand Tools" a handbook written in plain English that describes the use of practically every hand tool ever invented.
"Basic Hand Tools" on the hammer:
>Whoever conceived the idea of cracking a nut with a rock unknowingly invented a tool. When a later genius tied a stick to the rock, he invented the first hammer. There have been a lot of improvements since that humble beginning.
The modern version "Tools and Their Uses" also covers machine tools but is less fun.