SOLD -- Seiko 6138-7000 "Slide Rule"

[@MCMXI1]

Not only do we get to see a gorgeous time piece, but we get a lesson in the use of a slide rule by the mad scientist! What a day!

[@dornierdo2172]

Great watch.

[@BlairWatchProject]

Thanks!

[@steventokar6871]

Beautiful unique watch! lol I remember the pain a teacher of mine went thru trying to teach me to use one.

[@BlairWatchProject]

I’m sure you were a quick study!

[@steventokar6871]

Thank goodness they eventually let us use calculators 😂

[@commenter4515]

I'm too slow! Really interested in slide rule watches, were there any others that weren't designed for aviation?

[@BlairWatchProject]

These could be used outside of the aviation arena. Anything where calculations were needed “on the fly”. :-)