Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case

Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case (image 1/7)
Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case (image 2/7)
Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case (image 3/7)
Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case (image 4/7)
Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case (image 5/7)
Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case (image 6/7)
Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case (image 7/7)
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Keuffel & Esser K+E 4181-3 Slide Rule Ruler Drafting Vintage With Leather Case.
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