Home 28 degree angle tilt, and holding! Apparently, this is how they did the testing back in 1933 of these classic 60-person double-decker buses at the the London General Omnibus Company: (image via)Read more at http://www.darkroastedblend.com/2013/09/high-powered-laser-wonder-cleaning.html#UTTW1AKmCuQXdmjx.99 Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Share on Pinterest (Opens in new window) Pinterest Share on Tumblr (Opens in new window) Tumblr Share on LinkedIn (Opens in new window) LinkedIn Like Loading... Related