Paper used in furniture design. Watercolor paper has a long history of production and use. The thickness of paper is often measured by caliper, which is typically given in thousandths of an inch in the United States and in micrometers (µm) in the rest of the world. Paper may be between thick. Paper is often characterized by weight. In the United States, the weight assigned to a paper is the weight of a ream, 500 sheets, of varying "basic sizes", before the paper is cut into the size it is sold to end customers. For example, a ream of 20 lb,
Paper Toss: World Tour Paper Toss: World Tour Paper Toss: World Tour is a causal video game for iPhone, iPod Touch developed by Backflip Studios and sequel to "Paper Toss". "Paper Toss: World Tour" is set in different locations around the world, and players are challenged to flick a piece of paper into a bin. There is wind meaning wind direction and wind speed have to be accounted for making the game more challenging. Players are scored on how many times they manage to toss the paper into the bin until they miss. There are online leaderboards and 8 different levels ranging in difficulty.