13 of the world's weirdest inventions

Ever wondered what we did before sat navs and mobile phones? Here are the bizarre vintage inventions that never caught on. A series of photographs has revealed the ingenious efforts from the first half of the 20th century which helped people manage the pressures of everyday life. From a manual sat nav to a straw hat portable radio—some have been replaced by smartphones and tablets. The old-school sat nav from 1932 included a paper map dotted with landmarks that automatically rolled as the car drove along. (CATERS)