This vintage K&E Keuffel Esser Triangular Scale Rulers 8881 S1621W 12"L is a must-have for collectors and enthusiasts of drafting tools. Made in the United States, this ruler is a high-quality product from the renowned brand KEUFFEL & ESSER.

It's perfect for those interested in collecting vintage items or for those who appreciate the history of engineering and drafting. This ruler is a great addition to any collection and is sure to be a conversation starter. Get your hands on this unique piece of history today!