Here we have a Vintage Drafting Mechanical Engineer Triangle Shaped Ruler. It was made by U.S. Blue Co. Chicago. It is approx 1" tall x 12 1/2" long.It is in good condition. It does havesome imperfections and wear. We ship once or twice a week.Shipping & Handlingis FREE.*NO PICKUPS* Delivery Only.All payments are due within 4 days of the product ending.CA residents must add 9.00% for sales tax.