The body of the Pickett N600-ES is machined from solid aluminum. The scales are printed over an "eye-saver yellow" background. The scales are only five inches long, half the length of a full-sized slide rule-- which makes this Pickett truly "pocket sized." In fact, the leather case has a pocket clip on the front of it.
I picked this one up in mint condition in its original box, with instruction manual and everything-- "mint in box"-- from a fellow down in Arizona. He has the world's largest supply of "mint in box" Picketts-- of course, nobody has made slide rules now for over 25 years: I think this guy acquired the remaining stock of the old Pickett warehouse, or something.