This is a vintage 1950’s 12 inch folding plastic ruler from the Iron City Engineering Co. Pittsburg, PA - Electrical Engineers & Electrical Supplies. Ruler is four parts held together with a grommet. Fold section 1 & 2 out for a 12" ruler. Other two sections are calculator for wire sizes, weight, capacities, etc Condition - Very Good Photos & videos are of the exact item & are important elements of condition & description, so please be sure to look over them. Feel free to ask any & all questions prior to purchase as we are happy to answer them. If you are interested in the item please favorite it & like our store so you will be able to come back to check out new items. If you want to purchase multiple items please convo us prior to purchase to work shipping costs. Thanks for looking & please cast a glance at our other vintage & historical items: www.TrenchLineBooks.com - book mark the site. Follow us on Twitter @TrenchLineBooks & on Facebook - TrenchLineBooks Vintage 6 1/2 Inch Plastic Advertising Ruler & Calculator - Iron City Engineering Co. Pittsburg, Pa Electrical Information