It’s the Tory party’s political conference this week in Blackpool, and yes, you’re right – politics has no place on Tech Digest. But while the MPs are by the seaside, we thought it’d be a good time to check out a few gadgets for Dave Cameron and his mates.

Lexon Roswell calculator

Now, any good Chancellor of the Exchequer has to be up on his numbers. And if George Osbourne wants to sit behind the door of No11 Downing Street then this might be worthy of his first purchase. As long as it’s not put on his state expenses!