{"product_id":"how-machines-work-book-allan-sanders-9781848772120","title":"How Machines Work","description":"A unique interactive guide to understanding simple machines and mechanisms.  Each spread introduces you to a key mechanical principle, for example levers, gears and pulleys.  You then put these into practice by building working models using the perforated workshop board and colour-coded machine parts.  A timeline on every spread explores how each machine has been used throughout history.  With a hands-on approach that brings theories to life, this is a must for budding engineers.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49584971776273,"sku":"GOR005761335","price":15.99,"currency_code":"USD","in_stock":false},{"title":"GB \/ GOOD \/ INTERNAL","offer_id":49633778630929,"sku":"GOR004446729","price":10.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1848772122.jpg?v=1751186257","url":"https:\/\/www.worldofbooks.com\/products\/how-machines-work-book-allan-sanders-9781848772120","provider":"World of Books ","version":"1.0","type":"link"}