Keuffel & Esser Co, N. Y. Merchants' Slide Rule #4094 w Manual Case Extra Viewer

Keuffel & Esser Co, N. Merchants' Slide Rule #4094 with Manual, Case, and Extra Viewer. IF YOU ENJOY THE VARIETY OF ITEMS PLEASE CONSIDER ADDING US TO YOUR FAVORITES LIST! Reflections caused by imperfect lighting may cause white spots and shadows that do not actually exist on the items.

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