{"product_id":"linear-expansion-apparatus-with-dial-indicator-and-four-metal-rods","title":"Linear Expansion Apparatus  with Dial Indicator and four metal rods.","description":"Comprised of copper, brass, aluminum, and steel, this apparatus is an effective tool for demonstrating the coefficient of expansion of metals. The rod is placed inside a tube that has both an inlet and outlet for steam. Compare the expanded length of the rod to the temperature difference before and after the rod expands by using a thermometer. The extent of the rod's expansion is measured by a micrometer.","brand":"GSC International","offers":[{"title":"Default Title","offer_id":49507441639701,"sku":"GSC1206","price":179.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/1206.jpg?v=1761837722","url":"https:\/\/unitedsupplycorp.com\/products\/linear-expansion-apparatus-with-dial-indicator-and-four-metal-rods","provider":"United Supply Corp.","version":"1.0","type":"link"}