This blog post was originally going to be about the different types of rulers and why some are better than others for book folding. But the more I thought about it, the more I realised that it's the accuarcy that a ruler can help us to achieve that's the important thing here, not the ruler itself. So I decided to broaden the subject to include other factors that influence accuracy. Read on and I'll share what I have learned so far in my quest for the perfect book fold. Clear Your Workspace of