We measure our cutters at 90 degrees (vertical or horizontal) for sizing. No diagonal measurements. Please see photo above for cutter sizing & measurements info. Pencil / Crayon Two Cutter Set Every cutter size is 1" wide. 3D Printed PLA Cookie Cutter Not Dishwasher Safe Hand Wash Only Pencil & Crayon Stick Cookie Cutter Set/Teacher Appreciation Back To School