While this is a "mature" tutorial, the information and tool are relevant to today and I was very excited to have a "all-in-one" ruler. I want to share that I have the QIAD Calling All Geese ruler, however, it is missing a rotary slot. To all who consider getting this ruler, be guarded that you first check out the available instructions sheet and compare the images of the ruler, on those instructions, with the ruler you buy... the ruler I was gifted does not have the correct number of rotary slots which makes it and your project incorrect. I have been communicating with the QIAD Customer Service Supervisor who ultimately sent a link to download the instructions PDF rather than offer a ruler corrective action. Lovely person I'm sure and I'm confident Quilt In A Day will make this situation "right" , but do double check any product purchase to ensure you're getting what you expect.