Snaphook 3 : A self-closing device with a keeper, latch or other similar arrangement that will remain closed until manually opened; this includes selfclosing, single action, double action and double locking snaphooks
Spider, A Division of Safeworks, Glossary of Powered Access & Safety Terms, WA 98188, USA 2004. www.spiderstaging.com, http://www.spiderstaging.com/PDF%20Files/Catalog/A ppendix%20-%20Glossary%20of%20Powered%20Access%20S afety%20Terms.pdf, (Pwr Suspended Access Safeworks in Spiderstaging and Spiderbasket Usage - Amer) {466}