Magnetic ruler with magnets on the back to hold your pattern on the pattern binder which is available to buy seperately here: 

https://botanicalyarn.com/products/thread-maple-pattern-binder?_pos=1&_sid=57e8a2056&_ss=r 

Essential in every knitter's toolkit, this lovely Cherry wood ruler fits perfectly in our leather pattern binder. Made in the USA from natural Cherry Wood,it offers both metric and imperial measurement up to 15cm (6 inches. Featuring the T&M logo at the top, it beautifully completes the a4 folio

This ruler has a needle gauge slots ranging from US size 0-17 needle sizes.  

Because they are made of all natural wood, the appearance of each may slightly vary.