{"product_id":"compound-bar","title":"Compound Bar","description":"A compound bar is a visual demonstration of thermal expansion. It consists of a bimetal strip mounted in an insulating handle. Because of the unequal expansion of the two different metals, the bar will bend when heated, which illustrates the operation of a thermostat. Instructions included.","brand":"GSC International","offers":[{"title":"Default Title","offer_id":49507500523797,"sku":"GSC4-30901","price":8.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/4-30901.jpg?v=1761839152","url":"https:\/\/unitedsupplycorp.com\/products\/compound-bar","provider":"United Supply Corp.","version":"1.0","type":"link"}