Originally Posted by
Handcraftsbyjen
Twister and Lil' Twister were the first two rulers and were designed by Marsha Bergen, the Primitive Pinwheel Tool is the 3rd size Twister Ruler and uses 3 1/2" squares. Itty Bitty Primitive Pinwheel Tool is the 4th size Twister Ruler and uses 2 1/2" squares. The Primitive Pinwheel Tools are made by Primitive Gatherings. I hope that helps, feel free to PM me if you have any other questions about the ruler sizes.
Do all rulers still have the same line cross section positioning. ( hope you understand the question) I have to send from US and it is wrong time of year at present in order to make for Xmas.