Yeah, I have no idea where the author found that. I have one on my desk right now (but no ruler unfortunately), and it stands somewhere between A4 and A5. Edit

Yeah, I have no idea where the author found that. I have one on my desk right now (but no ruler unfortunately), and it stands somewhere between A4 and A5. Edit: according to A4/5 standards and Remarkable promotional content, it should be very close to A4.5.