Step back in time: Rare medieval ‘smartphones’ to go on display in London

A collection of rare medieval “smartphones” will go on display next month, offering an unusual chance to see so many of these curios up close.
The concertina-fold almanacs, also known as girdlebooks, as they could be hung from a belt and carried around, were fold-out booklets that unfolded to reveal a range of information. Nicknamed ‘medieval smartphones, ‘ they helped their users keep track of time, look up information, and organise their lives.
A 15th-century medieval a