My grandfather was an aircraft inspector for De Havilland in WWII. This is one of the notebooks he used to study for the job. He drew all the pictures.
Vengefu1 Tuna @ Vengefu1Tuna @lemm.ee Posts 0Comments 77Joined 2 yr. ago

Vengefu1 Tuna @ Vengefu1Tuna @lemm.ee
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I grew up in a sheet metal fabrication company in the US. It's wild to see drawings of measurement tools I'm familiar with from 80 years ago. I had no idea these designs were this old. This is so cool, thanks for sharing, OP!