Clear plastic quilting ruler in excellelnt condition. Measurement is in inches. https://www.amazon.ca/Dritz-66636-OLipfa-4-Inch-36-Inch/dp/B000YZ5U1U/ref=asc_df_B000YZ5U1U/?tag=googleshopc0c-20&linkCode=df0&hvadid=293036303887&hvpos=1o2&hvnetw=g&hvrand=10101235250564671104&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001599&hvtargid=pla-314772017008&psc=1