Keuffel & Esser Co. NY Slide Ruler NO Case Vintage USA Engineering SEE‎ PICS

This vintage Keuffel & Esser Co. slide rule was made in the United States and is a great addition to any engineering or science collection. With its classic design and precise measurements, this tool is perfect for those who appreciate the history of technology. The ruler shows some signs of wear and tear, but overall it is in good condition. Take a look at the pictures to get a closer view of its unique features.