The successor to the "most popular slide rule in the world", the N1010, the N1011 added a Ln scale to the back of the upper frame.
It is complete in the box except that the scabbard belt loop is missing.
Includes the box, plastic-lined leather scabbard, "How to use trig slide rules", "How to use Dual Base Slide Rule Exponential Ln-L Scales", registration card with guarantee, box insert "slid rule selector" listing types and applications, and the interlocking cardboard loop that holds everything together.
Front - K, A, [B, S, T, C], D, DI
Back - Ln, DF, [CF, CIF, CI, C], D, DI, L
Condition: Fine. No marks or scratches on body of rule, cursor is mildly scuffed over the hairline from rubbing in the scabbard sleeve. Scabbard has a couple of finger nail scuffs on the front.
|This one , was priced at $5 and purchased for $1 by Loran Hughes' mother at the Medford Senior Center swap meet. I accepted it for $50 part payment plus $75 cash for a Sansui cassette deck I sold him.