{"product_id":"united-scientific®-compound-bar-set","title":"United Scientific® Compound Bar Set","description":"Quick and easy tools for demonstrating thermal expansion. There are four bar combinations: Brass\/Aluminum, Brass\/Iron, Copper\/Iron, and Brass\/ Copper. Since each metal has a different coefficient of thermal expansion, they will create a unique curve when paired with a different metal.\n\nMetal bars are stamped with the identification of each metal, Aluminum (Al), Iron (Fe), Copper (Cu). The Brass bar is not stamped. Includes activity guide.","brand":"United Scientific Supplies","offers":[{"title":"Default Title","offer_id":49962399990037,"sku":"USSBMSET04","price":34.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/BMSET04_20Compound_20Bar_20Set_20of_204.jpg?v=1781075123","url":"https:\/\/unitedsupplycorp.com\/products\/united-scientific%c2%ae-compound-bar-set","provider":"United Supply Corp.","version":"1.0","type":"link"}