My Dad, an engineer for GM/Cadillac, gave my brother and I each a slide rule back in the 60's. I remember marveling at the precision of it, and I did learn to u

My Dad, an engineer for GM/Cadillac, gave my brother and I each a slide rule back in the 60's. I remember marveling at the precision of it, and I did learn to use it for some calculations, but not to a level that impressed him :).