Vintage Electronic Slide Rule Model N-515-T With Leather Carrying Case Engineering silver tie clip religious display pieces

religious display pieces

One size fits most (adjustable)

Includes tops

410 gauge cleaning kit

Vintage Electronic Slide Rule Model N-515-T With Leather Carrying Case Engineering silver tie clip religious display piecesVintage Pickett N 515 T Electronic Slide Rule w Original Leather Case Engineering Calculator Vintage Pickett Model N 515 T Electronic Slide Rule with original brown leather carrying case. This classic engineering and scientific calculating instrument features multiple mathematical and electrical engineering scales used by engineers, technicians, students, and draftsmen before handheld calculators became common. Manufactured by Pickett, one of