{"product_id":"rotating-system-on-air-bed-115-v-50-60-hz","title":"Rotating System on Air Bed\n(115 V, 50\/60 Hz)","description":"Product information: ..\u003cbr\u003eA small rotating disc with a protractor scale supports a cross bar to which weights can be attached. The disc is supported by a bed of air in which its axis is centred. A driving weight is suspended from a hook at the end of a string that is passed over a single pulley on one side and a multiple pulley on the other. The rotation is very slow and can be measured using a stopwatch by hand. Alternatively, a digital timer may be used. This can be started by a mechanism that is supplied with the kit and halted by a signal from a laser reflection sensor when the wheel passes through angle zero.","brand":"3B Scientific","offers":[{"title":"Default Title","offer_id":49419054055701,"sku":"3BS1000781","price":2456.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/U8405680-115_01_Rotating-System-on-Air-Bed-115-V-5060-Hz.jpg?v=1761021047","url":"https:\/\/unitedsupplycorp.com\/products\/rotating-system-on-air-bed-115-v-50-60-hz","provider":"United Supply Corp.","version":"1.0","type":"link"}