“Compack” is an A4-size folder that can be folded in half, perfect for those that want to carry documents intact, especially in packed trains during rush hour. The folder comes in three types, with ...

If you fold A4 size paper in half, it will be A5 size (148mm x 210mm), and if you connect two A4 size sheets together, it will be A3 size (297mm x 420mm). All papers such as A1, ...

It is commonly claimed that you cannot fold a piece of paper in half more than seven times. That may be true for a standard piece of paper of A4 dimensions, but according to US teenage (at the time) ...

The first time you fold it in half, it becomes 150 mm long and 0.1 mm thick. The second fold takes it to 75 mm long and 0.2 mm thick. By the 8th fold (if you can get there), you have a blob of ...