Stoneguard Overlay : A clear overlay that is transparent and that is applied along the bottom edge of a windscreen for the purpose of preventing damage to the windscreen from stones and other debris thrown up by other vehicles
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}