Pair Vintage Dietzgen 12" Triangular Scale Drafting Rulers 31626 & 31636 US6 USA

Pair of vintage wooden drafting / engineering rulers by Dietzgen. One is model 31626 and the other is model 31636. Both rulers are 12 long and have 3 sides.The 31626 model has wear including some rough spots along the edges and minor paint loss along with the engineer’s name in the groove. The wear on the 31636 model is minor but there is a stain on one of the sides of the ruler. See pictures for further details on condition. Would be cool in a shadow box for a collector or an engineer. Message me for questions .Please no returns . superb for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.