[editor-surveyor]

>> “So, either pick up a slide rule...” <<

.
Where, outside of a museum, or the attic of an elderly engineer, might one do that these days?
.

[Swordmaker]

. Where, outside of a museum, or the attic of an elderly engineer, might one do that these days? .

Uh, in my dresser drawer, next to my bed. Post Versalog Hemmi Bamboo in a leather case. Now about fifty years old.