This vintage wooden drafting rule by Dietzgen is a true gem for any collector or enthusiast. Made in the United States, it features three sides and is marked with the serial number 31626. The wooden material gives it a unique and authentic touch, making it a great display item for any drafting tools collection. This item is perfect for those interested in engineering, science, or medicine from the 1930s to now. With its brand and country of manufacture clearly listed, you can rest assured that you are purchasing a high-quality and genuine item. Add this vintage wooden drafting rule to your collection today!