Vintage K&E Mannheim, Pickett N4 Slide Rules & Charles Struning Lot For Sale

Discover this intriguing collection of vintage scientific instruments, highlighted by a classic Keuffel & Esser Co. Manheim slide rule, a distinct Charles Bruning Co. drafting aid, and a fascinating circular slide rule, alongside another K&E patent-marked slide rule in its original case. This lot offers a captivating glimpse into the era of mechanical computation and design, perfect for seasoned collectors, engineering enthusiasts, or anyone passionate about historical tools. Presented in authentic used condition with wear consistent with their age, these pieces are ready to enrich a collection, serve as unique display items, or spark conversation in any setting.Please check out our store. We have over 8000+ listings and are adding more daily!!Sold as is. Everything you see in the pictures is what is included in this lot. Photos are the best description. Please look at ALL pictures closely before purchasing. We will document any damage the best we can but the photos will always be the best way to exam the item. Items may need a more in depth cleaning. We will do our best to clean every item, although sometimes we can’t do a full thorough clean. Message us for additional photos or questions. We are a large store please allow up to 5 business days for your item to go out. We of course will get them out as fast as we can. If you ever have a concern, PLEASE MESSAGE US before leaving negative response. We will help resolve whatever issue you are having. We try very hard to provide good communication and always strive for everyone to have a positive experience!!