Vintage Dietzgen Engineering Slide Rule with Original Leather Case – Made in USA A fantastic piece of engineering history! This vintage Dietzgen precision slide rule was an essential tool for engineers, architects, scientists, and students before the arrival of electronic calculators. Featuring multiple advanced scales, a smooth-moving slide, and the original cursor, this instrument represents the craftsmanship and precision that made Dietzgen a respected name in technical instruments. Included is the original brown leather carrying case with metal clasp, adding both protection and collectible appeal. A wonderful addition to any engineering collection, office display, or STEM memorabilia collection. This was my required freshman sliderule bought in 1967. Needs no batteries! Condition: Vintage pre-owned condition with age-appropriate wear. Scales remain readable and the slide and cursor move as intended. Leather case shows normal wear and patina from years of use. Previous owner markings are present on the interior flap and case, adding to its authentic history and provenance. Please review photos carefully for overall condition details. #Dietzgen #SlideRule #VintageEngineering #EngineeringTools #ScientificInstrument #MadeInUSA #STEM #MathTools #VintageOffice #EngineeringCollectible #ScientificCalculator #VintageTechnology #IndustrialDecor #EngineerGift #VintageTools #DraftingTools #MidCenturyCollectible