:

“Up for auction is a vintage K&E 5304 Slide Rule, a rare find in the world of calculational tools. This extended length model measures almost 22 inches from end to end, providing enhanced precision for complex calculations. Despite its age, it remains a testament to the craftsmanship of Keuffel & Esser, renowned for their high-quality engineering instruments.

Please note that this slide rule does show signs of wear, including blemishes consistent with its age and use. Additionally, the slide window glass has two cracks, as depicted in the photos. While I haven’t attempted to clean these blemishes, they may be removable with the appropriate care.

I’ve attempted to research this slide rule, but its rarity is evident as the model number 5304 yields limited results in online searches. Due to its unique features and condition, I’ll leave it to the experts to determine its precise value. Don’t miss your chance to own a piece of engineering history and add this rare K&E 5304 Slide Rule to your collection.