Vintage Electronic Slide Rule Model N-515-T With Leather Carrying Case Engineering silver tie clip Includes tops

Includes tops

* Made in Guatemala

Great for display or everyday use

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Vintage Electronic Slide Rule Model N-515-T With Leather Carrying Case Engineering silver tie clip Includes topsVintage 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