Maximum Geek

Is that a circular slide rule?


Yep, that's a circular slide rule


Also known as an E6B flight computer

I came across the 2nd image online, and thought, "Is that Mr. Spock using a circular slide rule in the 23^rd century?"

Why yes, yes it is.

Given Gene Roddenberry's background, he flew aircraft in WWII and was an airline pilot for TWA after the war, I'm thinking that at least one of these probably came from him.

Spock and slide rules:  This is like a total geek-gasm.