Vintage K&E Keuffel Esser Wood Slide Rule Magnifying Cursor Leather Case USA For Sale

Vintage Keuffel & Esser (K&E) Wooden Slide Rule with Magnifying Cursor and Brown Leather Carrying Case.A classic American-made precision calculating instrument from the pre-electronic calculator era. A wonderful collectible for engineers, mathematicians, scientists, and vintage scientific instrument enthusiasts.• Manufacturer: Keuffel & Esser Co., New York
• Made in USA
• Traditional wooden construction with ivory-colored mathematical scales
• Raised magnifying cursor with metal frame
• Multiple logarithmic calculation scales
• Reverse features original printed mathematical conversion and reference tables
• Patent markings visible on slide rule and cursor
• Includes brown leather carrying case marked K&E Slide RuleCondition & Functionality:
• Good vintage condition with age-appropriate cosmetic wear.
• Function tested and works great!
• Center slide moves smoothly and operates properly.
• Magnifying cursor slides smoothly and functions as intended.
• Wooden body appears structurally sound.
• Mathematical scales remain clear and legible with some minor discoloration, spotting, and surface marks.
• Magnifying cursor shows some scratches and age-related wear.
• Leather case displays scuffs, creasing, edge wear, and some separation along the stitched side seam.
• Mathematical accuracy has not been independently verified.
• Please review all photographs carefully for exact condition.VINTAGE ITEM NOTE:
This is an authentic vintage item displaying natural wear consistent with age and previous use. Please review all photos for condition details.An excellent addition to any collection of antique scientific instruments, engineering tools, mathematical equipment, or vintage office accessories.✨ Carefully packed and shipped from OctoGremli Trading Co. — where the weird, wonderful, forgotten, and fabulous get another chance to be loved.