all 2 comments

[–]NoOil 3 insightful - 1 fun3 insightful - 0 fun4 insightful - 1 fun -  (1 child)

Curious Droid is an amazing channel!

[–]Tom_Bombadil[S] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

They have some interesting material.

I tip my hat to the engineers who did it with slide rules, and drafting tables.